30979345 has 16 divisors (see below), whose sum is σ = 38193408. Its totient is φ = 24111360.

The previous prime is 30979339. The next prime is 30979369. The reversal of 30979345 is 54397903.

It is not a de Polignac number, because 30979345 - 2⁹ = 30978833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30979298 and 30979307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56362 + ... + 56908.

It is an arithmetic number, because the mean of its divisors is an integer number (2387088).

Almost surely, 2^30979345 is an apocalyptic number.

It is an amenable number.

30979345 is a deficient number, since it is larger than the sum of its proper divisors (7214063).

30979345 is a wasteful number, since it uses less digits than its factorization.

30979345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 30979345 is about 5565.9091799993. The cubic root of 30979345 is about 314.0682806870.

The spelling of 30979345 in words is "thirty million, nine hundred seventy-nine thousand, three hundred forty-five".