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231031130132 = 221110162878269
BaseRepresentation
bin1101011100101010000…
…1110100100000010100
3211002022221211102111102
43113022201310200110
512241122432131012
6254044554525232
722456111130105
oct3271241644024
9732287742442
10231031130132
1189a860605a0
1238937a36818
1318a2b20093a
14b27945c3ac
15602287d2c2
hex35ca874814

231031130132 has 48 divisors (see below), whose sum is σ = 445551079680. Its totient is φ = 103945296000.

The previous prime is 231031130123. The next prime is 231031130293.

231031130132 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27935294 + ... + 27943562.

It is an arithmetic number, because the mean of its divisors is an integer number (9282314160).

Almost surely, 2231031130132 is an apocalyptic number.

231031130132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231031130132 is a deficient number, since it is larger than the sum of its proper divisors (214519949548).

231031130132 is a wasteful number, since it uses less digits than its factorization.

231031130132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14672 (or 14670 counting only the distinct ones).

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

It can be divided in two parts, 231031 and 130132, that added together give a palindrome (361163).

The spelling of 231031130132 in words is "two hundred thirty-one billion, thirty-one million, one hundred thirty thousand, one hundred thirty-two".

Divisors: 1 2 4 11 22 44 101 202 404 1111 2222 4444 6287 8269 12574 16538 25148 33076 69157 90959 138314 181918 276628 363836 634987 835169 1269974 1670338 2539948 3340676 6984857 9186859 13969714 18373718 27939428 36747436 51987203 103974406 207948812 571859233 1143718466 2287436932 5250707503 10501415006 21002830012 57757782533 115515565066 231031130132