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31010132231 = 137477319031
BaseRepresentation
bin11100111000010110…
…010001000100000111
32222001011000221021222
4130320112101010013
51002002043212411
622125034430555
72145313526531
oct347026210407
988034027258
1031010132231
1112173458361
12601529245b
132c0273c090
141702672851
15c1765c4db
hex738591107

31010132231 has 8 divisors (see below), whose sum is σ = 33400098144. Its totient is φ = 28620819360.

The previous prime is 31010132177. The next prime is 31010132291. The reversal of 31010132231 is 13223101013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31010132231 - 214 = 31010115847 is a prime.

It is a super-2 number, since 2×310101322312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010132291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62315 + ... + 256716.

It is an arithmetic number, because the mean of its divisors is an integer number (4175012268).

Almost surely, 231010132231 is an apocalyptic number.

31010132231 is a deficient number, since it is larger than the sum of its proper divisors (2389965913).

31010132231 is a wasteful number, since it uses less digits than its factorization.

31010132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326521.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31010132231 its reverse (13223101013), we get a palindrome (44233233244).

The spelling of 31010132231 in words is "thirty-one billion, ten million, one hundred thirty-two thousand, two hundred thirty-one".

Divisors: 1 13 7477 97201 319031 4147403 2385394787 31010132231