31860221199472 has 20 divisors (see below), whose sum is σ = 61738202200576. Its totient is φ = 15927781921920.

The previous prime is 31860221199461. The next prime is 31860221199473. The reversal of 31860221199472 is 27499112206813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31860221199473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145429488 + ... + 145648399.

Almost surely, 2^{31860221199472} is an apocalyptic number.

It is an amenable number.

31860221199472 is a deficient number, since it is larger than the sum of its proper divisors (29877981001104).

31860221199472 is a wasteful number, since it uses less digits than its factorization.

31860221199472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291084736 (or 291084730 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 31860221199472 in words is "thirty-one trillion, eight hundred sixty billion, two hundred twenty-one million, one hundred ninety-nine thousand, four hundred seventy-two".