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131102223120 = 243251197716943
BaseRepresentation
bin111101000011001001…
…1010010101100010000
3110112101201221222111100
41322012103102230100
54121444132114440
6140121051344400
712320556336561
oct1720623225420
9415351858440
10131102223120
1150666872730
12214a9a52100
13c49435336b
1464b9a26168
1536249d8230
hex1e864d2b10

131102223120 has 240 divisors, whose sum is σ = 480830867712. Its totient is φ = 31747952640.

The previous prime is 131102223089. The next prime is 131102223181. The reversal of 131102223120 is 21322201131.

131102223120 is a `hidden beast` number, since 131 + 1 + 0 + 222 + 312 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131102223093 and 131102223102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7729369 + ... + 7746311.

Almost surely, 2131102223120 is an apocalyptic number.

131102223120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131102223120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240415433856).

131102223120 is an abundant number, since it is smaller than the sum of its proper divisors (349728644592).

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

131102223120 is a wasteful number, since it uses less digits than its factorization.

131102223120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17950 (or 17941 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 131102223120 its reverse (21322201131), we get a palindrome (152424424251).

The spelling of 131102223120 in words is "one hundred thirty-one billion, one hundred two million, two hundred twenty-three thousand, one hundred twenty".