402912131031 has 6 divisors (see below), whose sum is σ = 581984189280. Its totient is φ = 268608087348.

The previous prime is 402912131009. The next prime is 402912131071. The reversal of 402912131031 is 130131219204.

402912131031 is a `hidden beast` number, since 40 + 291 + 21 + 310 + 3 + 1 = 666.

It is not a de Polignac number, because 402912131031 - 2¹⁰ = 402912130007 is a prime.

It is a super-2 number, since 2×402912131031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402912130986 and 402912131004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402912131071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22384007271 + ... + 22384007288.

It is an arithmetic number, because the mean of its divisors is an integer number (96997364880).

Almost surely, 2^402912131031 is an apocalyptic number.

402912131031 is a deficient number, since it is larger than the sum of its proper divisors (179072058249).

402912131031 is a wasteful number, since it uses less digits than its factorization.

402912131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44768014565 (or 44768014562 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 402912131031 in words is "four hundred two billion, nine hundred twelve million, one hundred thirty-one thousand, thirty-one".