30902013 has 8 divisors (see below), whose sum is σ = 45780800. Its totient is φ = 20601324.

The previous prime is 30901991. The next prime is 30902033. The reversal of 30902013 is 31020903.

It is not a de Polignac number, because 30902013 - 2¹⁴ = 30885629 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 (30902033) 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 in 7 ways as a sum of consecutive naturals, for example, 572233 + ... + 572286.

It is an arithmetic number, because the mean of its divisors is an integer number (5722600).

Almost surely, 2^30902013 is an apocalyptic number.

It is an amenable number.

30902013 is a deficient number, since it is larger than the sum of its proper divisors (14878787).

30902013 is a wasteful number, since it uses less digits than its factorization.

30902013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144528 (or 1144522 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 30902013 is about 5558.9579059388. The cubic root of 30902013 is about 313.8067325969.

Adding to 30902013 its reverse (31020903), we get a palindrome (61922916).

The spelling of 30902013 in words is "thirty million, nine hundred two thousand, thirteen".