30656413 has 2 divisors, whose sum is σ = 30656414. Its totient is φ = 30656412.

The previous prime is 30656399. The next prime is 30656441. The reversal of 30656413 is 31465603.

It is an a-pointer prime, because the next prime (30656441) can be obtained adding 30656413 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21734244 + 8922169 = 4662^2 + 2987^2 .

It is a cyclic number.

It is not a de Polignac number, because 30656413 - 2⁹ = 30655901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30656113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15328206 + 15328207.

It is an arithmetic number, because the mean of its divisors is an integer number (15328207).

Almost surely, 2^30656413 is an apocalyptic number.

It is an amenable number.

30656413 is a deficient number, since it is larger than the sum of its proper divisors (1).

30656413 is an equidigital number, since it uses as much as digits as its factorization.

30656413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 30656413 is about 5536.8233672387. The cubic root of 30656413 is about 312.9731728888.

The spelling of 30656413 in words is "thirty million, six hundred fifty-six thousand, four hundred thirteen".