30497913 has 6 divisors (see below), whose sum is σ = 44052554. Its totient is φ = 20331936.

The previous prime is 30497833. The next prime is 30497917. The reversal of 30497913 is 31979403.

It can be written as a sum of positive squares in only one way, i.e., 19686969 + 10810944 = 4437^2 + 3288^2 .

It is not a de Polignac number, because 30497913 - 2¹² = 30493817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30497917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1694320 + ... + 1694337.

Almost surely, 2^30497913 is an apocalyptic number.

It is an amenable number.

30497913 is a deficient number, since it is larger than the sum of its proper divisors (13554641).

30497913 is a wasteful number, since it uses less digits than its factorization.

30497913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388663 (or 3388660 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 30497913 is about 5522.4915572593. The cubic root of 30497913 is about 312.4328619503.

The spelling of 30497913 in words is "thirty million, four hundred ninety-seven thousand, nine hundred thirteen".