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131110031023 = 127157173191199
BaseRepresentation
bin111101000011011000…
…1000100111010101111
3110112102021122122220221
41322012301010322233
54122003131443043
6140121530552211
712321012606256
oct1720661047257
9415367578827
10131110031023
1150670215944
12214b0598667
13c495b5821a
1464baa9979d
15362552b8ed
hex1e86c44eaf

131110031023 has 32 divisors (see below), whose sum is σ = 135128678400. Its totient is φ = 127186899840.

The previous prime is 131110031021. The next prime is 131110031029. The reversal of 131110031023 is 320130011131.

It is a cyclic number.

It is not a de Polignac number, because 131110031023 - 21 = 131110031021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131110030988 and 131110031006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131110031021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 658844278 + ... + 658844476.

It is an arithmetic number, because the mean of its divisors is an integer number (4222771200).

Almost surely, 2131110031023 is an apocalyptic number.

131110031023 is a deficient number, since it is larger than the sum of its proper divisors (4018647377).

131110031023 is a wasteful number, since it uses less digits than its factorization.

131110031023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 131110031023 its reverse (320130011131), we get a palindrome (451240042154).

The spelling of 131110031023 in words is "one hundred thirty-one billion, one hundred ten million, thirty-one thousand, twenty-three".

Divisors: 1 127 157 173 191 199 19939 21971 24257 25273 27161 29987 31243 33043 34427 38009 3449447 3808349 3967861 4196461 4372229 4827143 5187751 5405039 5967413 6575557 658844377 686439953 757861451 835095739 1032362449 131110031023