31323500552 has 32 divisors (see below), whose sum is σ = 63867084120. Its totient is φ = 14342077440.

The previous prime is 31323500519. The next prime is 31323500609. The reversal of 31323500552 is 25500532313.

It can be written as a sum of positive squares in 4 ways, for example, as 28840870276 + 2482630276 = 169826^2 + 49826^2 .

It is a super-2 number, since 2×31323500552² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3107399 + ... + 3117462.

Almost surely, 2^31323500552 is an apocalyptic number.

It is an amenable number.

31323500552 is an abundant number, since it is smaller than the sum of its proper divisors (32543583568).

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

31323500552 is a wasteful number, since it uses less digits than its factorization.

31323500552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6224921 (or 6224917 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 29.

The spelling of 31323500552 in words is "thirty-one billion, three hundred twenty-three million, five hundred thousand, five hundred fifty-two".