30968213 has 8 divisors (see below), whose sum is σ = 32073888. Its totient is φ = 29880144.

The previous prime is 30968209. The next prime is 30968219. The reversal of 30968213 is 31286903.

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

It is a cyclic number.

It is not a de Polignac number, because 30968213 - 2² = 30968209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30968213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30968219) 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, 770 + ... + 7907.

It is an arithmetic number, because the mean of its divisors is an integer number (4009236).

Almost surely, 2^30968213 is an apocalyptic number.

It is an amenable number.

30968213 is a deficient number, since it is larger than the sum of its proper divisors (1105675).

30968213 is an equidigital number, since it uses as much as digits as its factorization.

30968213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8803.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 30968213 is about 5564.9090738304. The cubic root of 30968213 is about 314.0306574797.

The spelling of 30968213 in words is "thirty million, nine hundred sixty-eight thousand, two hundred thirteen".