30931249924 has 6 divisors (see below), whose sum is σ = 54129687374. Its totient is φ = 15465624960.

The previous prime is 30931249903. The next prime is 30931249927. The reversal of 30931249924 is 42994213903.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 29956686400 + 974563524 = 173080^2 + 31218^2 .

It is not an unprimeable number, because it can be changed into a prime (30931249927) 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 as a sum of consecutive naturals, namely, 3866406237 + ... + 3866406244.

Almost surely, 2^30931249924 is an apocalyptic number.

It is an amenable number.

30931249924 is a deficient number, since it is larger than the sum of its proper divisors (23198437450).

30931249924 is a wasteful number, since it uses less digits than its factorization.

30931249924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7732812485 (or 7732812483 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 46.

The spelling of 30931249924 in words is "thirty billion, nine hundred thirty-one million, two hundred forty-nine thousand, nine hundred twenty-four".