31553120532 has 24 divisors (see below), whose sum is σ = 73632041056. Its totient is φ = 10516550688.

The previous prime is 31553120479. The next prime is 31553120549. The reversal of 31553120532 is 23502135513.

It is a self number, because there is not a number n which added to its sum of digits gives 31553120532.

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, 26983 + ... + 252654.

Almost surely, 2^31553120532 is an apocalyptic number.

It is an amenable number.

31553120532 is an abundant number, since it is smaller than the sum of its proper divisors (42078920524).

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

31553120532 is a wasteful number, since it uses less digits than its factorization.

31553120532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289047 (or 289045 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 31553120532 in words is "thirty-one billion, five hundred fifty-three million, one hundred twenty thousand, five hundred thirty-two".