31026136404 has 24 divisors (see below), whose sum is σ = 72429366240. Its totient is φ = 10337038624.

The previous prime is 31026136363. The next prime is 31026136423. The reversal of 31026136404 is 40463162013.

It is a super-2 number, since 2×31026136404² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599994 + ... + 649649.

It is an arithmetic number, because the mean of its divisors is an integer number (3017890260).

Almost surely, 2^31026136404 is an apocalyptic number.

It is an amenable number.

31026136404 is an abundant number, since it is smaller than the sum of its proper divisors (41403229836).

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

31026136404 is a wasteful number, since it uses less digits than its factorization.

31026136404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251719 (or 1251717 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 31026136404 its reverse (40463162013), we get a palindrome (71489298417).

The spelling of 31026136404 in words is "thirty-one billion, twenty-six million, one hundred thirty-six thousand, four hundred four".