31572874288880 has 40 divisors (see below), whose sum is σ = 73438290240864. Its totient is φ = 12623754873600.

The previous prime is 31572874288873. The next prime is 31572874288883. The reversal of 31572874288880 is 8888247827513.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×31572874288880² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31572874288883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84105956 + ... + 84480515.

Almost surely, 2^{31572874288880} is an apocalyptic number.

It is an amenable number.

31572874288880 is an abundant number, since it is smaller than the sum of its proper divisors (41865415951984).

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

31572874288880 is a wasteful number, since it uses less digits than its factorization.

31572874288880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168588825 (or 168588819 counting only the distinct ones).

The product of its (nonzero) digits is 385351680, while the sum is 71.

The spelling of 31572874288880 in words is "thirty-one trillion, five hundred seventy-two billion, eight hundred seventy-four million, two hundred eighty-eight thousand, eight hundred eighty".