30914531 has 2 divisors, whose sum is σ = 30914532. Its totient is φ = 30914530.

The previous prime is 30914519. The next prime is 30914603. The reversal of 30914531 is 13541903.

It is a weak prime.

It is an emirp because it is prime and its reverse (13541903) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30914531 is a prime.

It is a super-2 number, since 2×30914531² = 1911416453899922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30914531.

It is not a weakly prime, because it can be changed into another prime (30914131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15457265 + 15457266.

It is an arithmetic number, because the mean of its divisors is an integer number (15457266).

Almost surely, 2^30914531 is an apocalyptic number.

30914531 is a deficient number, since it is larger than the sum of its proper divisors (1).

30914531 is an equidigital number, since it uses as much as digits as its factorization.

30914531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 30914531 is about 5560.0837223912. The cubic root of 30914531 is about 313.8490998732.

The spelling of 30914531 in words is "thirty million, nine hundred fourteen thousand, five hundred thirty-one".