30999940624 has 15 divisors (see below), whose sum is σ = 60063749517. Its totient is φ = 15499618176.

The previous prime is 30999940583. The next prime is 30999940639. The reversal of 30999940624 is 42604999903.

The square root of 30999940624 is 176068.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 24605059600 + 6394881024 = 156860^2 + 79968^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 682264 + ... + 726280.

Almost surely, 2^30999940624 is an apocalyptic number.

30999940624 is the 176068-th square number.

It is an amenable number.

30999940624 is a deficient number, since it is larger than the sum of its proper divisors (29063808893).

30999940624 is an frugal number, since it uses more digits than its factorization.

30999940624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88042 (or 44019 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 55.

The spelling of 30999940624 in words is "thirty billion, nine hundred ninety-nine million, nine hundred forty thousand, six hundred twenty-four".