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131031101133023 = 7132110761708481
BaseRepresentation
bin11101110010110000001110…
…001111001101000011011111
3122011221110011201200222011112
4131302300032033031003133
5114133303143342224043
61142402505025412235
736412453556551640
oct3562601617150337
9564843151628145
10131031101133023
1138828a83685743
121284285679a07b
1358162450a2400
14244dd20da56c7
151023646445518
hex772c0e3cd0df

131031101133023 has 12 divisors (see below), whose sum is σ = 162155141217648. Its totient is φ = 103672959137280.

The previous prime is 131031101132993. The next prime is 131031101133109. The reversal of 131031101133023 is 320331101130131.

It is not a de Polignac number, because 131031101133023 - 222 = 131031096938719 is a prime.

It is a super-2 number, since 2×1310311011330232 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131031101133023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031101183023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55380853058 + ... + 55380855423.

It is an arithmetic number, because the mean of its divisors is an integer number (13512928434804).

Almost surely, 2131031101133023 is an apocalyptic number.

131031101133023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131031101133023 is a deficient number, since it is larger than the sum of its proper divisors (31124040084625).

131031101133023 is a wasteful number, since it uses less digits than its factorization.

131031101133023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110761708514 (or 110761708501 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 131031101133023 its reverse (320331101130131), we get a palindrome (451362202263154).

The spelling of 131031101133023 in words is "one hundred thirty-one trillion, thirty-one billion, one hundred one million, one hundred thirty-three thousand, twenty-three".

Divisors: 1 7 13 91 169 1183 110761708481 775331959367 1439902210253 10079315471771 18718728733289 131031101133023