31555535052 has 12 divisors (see below), whose sum is σ = 73629581816. Its totient is φ = 10518511680.

The previous prime is 31555535047. The next prime is 31555535059. The reversal of 31555535052 is 25053555513.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 31555535052.

It is not an unprimeable number, because it can be changed into a prime (31555535059) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1314813949 + ... + 1314813972.

Almost surely, 2^31555535052 is an apocalyptic number.

It is an amenable number.

31555535052 is an abundant number, since it is smaller than the sum of its proper divisors (42074046764).

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

31555535052 is a wasteful number, since it uses less digits than its factorization.

31555535052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629627928 (or 2629627926 counting only the distinct ones).

The product of its (nonzero) digits is 281250, while the sum is 39.

The spelling of 31555535052 in words is "thirty-one billion, five hundred fifty-five million, five hundred thirty-five thousand, fifty-two".