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131020231031300 = 225213137507732943
BaseRepresentation
bin11101110010100110000110…
…010101000011101000000100
3122011220102010011200120212102
4131302212012111003220010
5114133113413121000200
61142353510241411232
736411620315324162
oct3562460625035004
9564812104616772
10131020231031300
11388244057aa3a6
1212840722339b18
135815202059160
14244d5ad46a232
15102320beb46d5
hex772986543a04

131020231031300 has 72 divisors (see below), whose sum is σ = 306186845870976. Its totient is φ = 48376282872960.

The previous prime is 131020231031231. The next prime is 131020231031309. The reversal of 131020231031300 is 3130132020131.

131020231031300 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (131020231031309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178392629 + ... + 179125571.

Almost surely, 2131020231031300 is an apocalyptic number.

131020231031300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131020231031300 is an abundant number, since it is smaller than the sum of its proper divisors (175166614839676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131020231031300 is a wasteful number, since it uses less digits than its factorization.

131020231031300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870477 (or 870470 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131020231031300 its reverse (3130132020131), we get a palindrome (134150363051431).

The spelling of 131020231031300 in words is "one hundred thirty-one trillion, twenty billion, two hundred thirty-one million, thirty-one thousand, three hundred".

Divisors: 1 2 4 5 10 13 20 25 26 50 52 65 100 130 260 325 650 1300 137507 275014 550028 687535 732943 1375070 1465886 1787591 2750140 2931772 3437675 3575182 3664715 6875350 7150364 7329430 8937955 9528259 13750700 14658860 17875910 18323575 19056518 35751820 36647150 38113036 44689775 47641295 73294300 89379550 95282590 178759100 190565180 238206475 476412950 952825900 100784793101 201569586202 403139172404 503923965505 1007847931010 1310202310313 2015695862020 2519619827525 2620404620626 5039239655050 5240809241252 6551011551565 10078479310100 13102023103130 26204046206260 32755057757825 65510115515650 131020231031300