402309131023 has 16 divisors (see below), whose sum is σ = 408417568416. Its totient is φ = 396245606400.

The previous prime is 402309131011. The next prime is 402309131041. The reversal of 402309131023 is 320131903204.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402309131023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402309130982 and 402309131000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402309131093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27126136 + ... + 27140962.

It is an arithmetic number, because the mean of its divisors is an integer number (25526098026).

Almost surely, 2^402309131023 is an apocalyptic number.

402309131023 is a deficient number, since it is larger than the sum of its proper divisors (6108437393).

402309131023 is a wasteful number, since it uses less digits than its factorization.

402309131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16314.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 402309131023 in words is "four hundred two billion, three hundred nine million, one hundred thirty-one thousand, twenty-three".