30901613 has 2 divisors, whose sum is σ = 30901614. Its totient is φ = 30901612.

The previous prime is 30901603. The next prime is 30901621. The reversal of 30901613 is 31610903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30327049 + 574564 = 5507^2 + 758^2 .

It is a cyclic number.

It is not a de Polignac number, because 30901613 - 2¹⁰ = 30900589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30901603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15450806 + 15450807.

It is an arithmetic number, because the mean of its divisors is an integer number (15450807).

Almost surely, 2^30901613 is an apocalyptic number.

It is an amenable number.

30901613 is a deficient number, since it is larger than the sum of its proper divisors (1).

30901613 is an equidigital number, since it uses as much as digits as its factorization.

30901613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 30901613 is about 5558.9219278562. The cubic root of 30901613 is about 313.8053786049.

The spelling of 30901613 in words is "thirty million, nine hundred one thousand, six hundred thirteen".