30968613 has 24 divisors (see below), whose sum is σ = 50712480. Its totient is φ = 18053280.

The previous prime is 30968599. The next prime is 30968617. The reversal of 30968613 is 31686903.

It is a happy number.

30968613 is a `hidden beast` number, since 30 + 9 + 6 + 8 + 613 = 666.

It is not a de Polignac number, because 30968613 - 2¹⁰ = 30967589 is a prime.

It is a super-2 number, since 2×30968613² = 1918109982287538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30968617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4743 + ... + 9188.

It is an arithmetic number, because the mean of its divisors is an integer number (2113020).

Almost surely, 2^30968613 is an apocalyptic number.

It is an amenable number.

30968613 is a deficient number, since it is larger than the sum of its proper divisors (19743867).

30968613 is a wasteful number, since it uses less digits than its factorization.

30968613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13969 (or 13966 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 30968613 is about 5564.9450132054. The cubic root of 30968613 is about 314.0320095297.

The spelling of 30968613 in words is "thirty million, nine hundred sixty-eight thousand, six hundred thirteen".