30979221215 has 8 divisors (see below), whose sum is σ = 38039602128. Its totient is φ = 24207019200.

The previous prime is 30979221211. The next prime is 30979221257. The reversal of 30979221215 is 51212297903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30979221215 - 2² = 30979221211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30979221211) 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, 72044486 + ... + 72044915.

It is an arithmetic number, because the mean of its divisors is an integer number (4754950266).

Almost surely, 2^30979221215 is an apocalyptic number.

30979221215 is a deficient number, since it is larger than the sum of its proper divisors (7060380913).

30979221215 is a wasteful number, since it uses less digits than its factorization.

30979221215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144089449.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 30979221215 in words is "thirty billion, nine hundred seventy-nine million, two hundred twenty-one thousand, two hundred fifteen".