31323069942 has 64 divisors (see below), whose sum is σ = 66978938880. Its totient is φ = 9731183616.

The previous prime is 31323069919. The next prime is 31323069979. The reversal of 31323069942 is 24996032313.

It is a super-2 number, since 2×31323069942² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31323069894 and 31323069903.

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 31 ways as a sum of consecutive naturals, for example, 7990659 + ... + 7994577.

It is an arithmetic number, because the mean of its divisors is an integer number (1046545920).

Almost surely, 2^31323069942 is an apocalyptic number.

31323069942 is an abundant number, since it is smaller than the sum of its proper divisors (35655868938).

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

31323069942 is a wasteful number, since it uses less digits than its factorization.

31323069942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4685.

The product of its (nonzero) digits is 209952, while the sum is 42.

The spelling of 31323069942 in words is "thirty-one billion, three hundred twenty-three million, sixty-nine thousand, nine hundred forty-two".