30997937480 has 16 divisors (see below), whose sum is σ = 69745359420. Its totient is φ = 12399174976.

The previous prime is 30997937471. The next prime is 30997937483. The reversal of 30997937480 is 8473979903.

It can be written as a sum of positive squares in 2 ways, for example, as 30864165124 + 133772356 = 175682^2 + 11566^2 .

It is not an unprimeable number, because it can be changed into a prime (30997937483) 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, 387474179 + ... + 387474258.

Almost surely, 2^30997937480 is an apocalyptic number.

It is an amenable number.

30997937480 is an abundant number, since it is smaller than the sum of its proper divisors (38747421940).

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

30997937480 is a wasteful number, since it uses less digits than its factorization.

30997937480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774948448 (or 774948444 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 59.

The spelling of 30997937480 in words is "thirty billion, nine hundred ninety-seven million, nine hundred thirty-seven thousand, four hundred eighty".