30952513 has 2 divisors, whose sum is σ = 30952514. Its totient is φ = 30952512.

The previous prime is 30952489. The next prime is 30952531. The reversal of 30952513 is 31525903.

Together with next prime (30952531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22496049 + 8456464 = 4743^2 + 2908^2 .

It is an emirp because it is prime and its reverse (31525903) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30952513 is a prime.

It is a super-2 number, since 2×30952513² = 1916116122030338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30952543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15476256 + 15476257.

It is an arithmetic number, because the mean of its divisors is an integer number (15476257).

Almost surely, 2^30952513 is an apocalyptic number.

It is an amenable number.

30952513 is a deficient number, since it is larger than the sum of its proper divisors (1).

30952513 is an equidigital number, since it uses as much as digits as its factorization.

30952513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 30952513 is about 5563.4982699737. The cubic root of 30952513 is about 313.9775803160.

The spelling of 30952513 in words is "thirty million, nine hundred fifty-two thousand, five hundred thirteen".