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131000230000 = 245413100023
BaseRepresentation
bin111101000000000111…
…0001110000001110000
3110112010122001012020101
41322000032032001300
54121242024330000
6140103005322144
712315210403543
oct1720016160160
9415118035211
10131000230000
115061423a7a2
122147b866354
13c4791925c3
1464aa27685a
15361aa8ce6a
hex1e8038e070

131000230000 has 50 divisors (see below), whose sum is σ = 317164681064. Its totient is φ = 52400088000.

The previous prime is 131000229967. The next prime is 131000230003. The reversal of 131000230000 is 32000131.

It is a tau number, because it is divible by the number of its divisors (50).

It is a super-3 number, since 3×1310002300003 (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000230003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6540012 + ... + 6560011.

Almost surely, 2131000230000 is an apocalyptic number.

131000230000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131000230000 is an abundant number, since it is smaller than the sum of its proper divisors (186164451064).

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

131000230000 is an equidigital number, since it uses as much as digits as its factorization.

131000230000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13100051 (or 13100030 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 131000230000 its reverse (32000131), we get a palindrome (131032230131).

The spelling of 131000230000 in words is "one hundred thirty-one billion, two hundred thirty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 125 200 250 400 500 625 1000 1250 2000 2500 5000 10000 13100023 26200046 52400092 65500115 104800184 131000230 209600368 262000460 327500575 524000920 655001150 1048001840 1310002300 1637502875 2620004600 3275005750 5240009200 6550011500 8187514375 13100023000 16375028750 26200046000 32750057500 65500115000 131000230000