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131031013002 = 23161313539059
BaseRepresentation
bin111101000001000001…
…1101001011010001010
3110112012202222010120120
41322002003221122022
54121322414404002
6140110025204110
712316033143111
oct1720203513212
9415182863516
10131031013002
115062a65549a
122148a030636
13c48267cab6
1464b03aac78
15361d61dcbc
hex1e820e968a

131031013002 has 16 divisors (see below), whose sum is σ = 262224514080. Its totient is φ = 43649922992.

The previous prime is 131031012989. The next prime is 131031013007. The reversal of 131031013002 is 200310130131.

It is not an unprimeable number, because it can be changed into a prime (131031013007) 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, 6759852 + ... + 6779207.

It is an arithmetic number, because the mean of its divisors is an integer number (16389032130).

Almost surely, 2131031013002 is an apocalyptic number.

131031013002 is an abundant number, since it is smaller than the sum of its proper divisors (131193501078).

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

131031013002 is a wasteful number, since it uses less digits than its factorization.

131031013002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13540677.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 131031013002 its reverse (200310130131), we get a palindrome (331341143133).

The spelling of 131031013002 in words is "one hundred thirty-one billion, thirty-one million, thirteen thousand, two".

Divisors: 1 2 3 6 1613 3226 4839 9678 13539059 27078118 40617177 81234354 21838502167 43677004334 65515506501 131031013002