30494831 has 2 divisors, whose sum is σ = 30494832. Its totient is φ = 30494830.

The previous prime is 30494819. The next prime is 30494833. The reversal of 30494831 is 13849403.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30494831 - 2⁶ = 30494767 is a prime.

It is a super-2 number, since 2×30494831² = 1859869435437122, which contains 22 as substring.

Together with 30494833, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30494833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15247415 + 15247416.

It is an arithmetic number, because the mean of its divisors is an integer number (15247416).

Almost surely, 2^30494831 is an apocalyptic number.

30494831 is a deficient number, since it is larger than the sum of its proper divisors (1).

30494831 is an equidigital number, since it uses as much as digits as its factorization.

30494831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 30494831 is about 5522.2125094929. The cubic root of 30494831 is about 312.4223371808.

The spelling of 30494831 in words is "thirty million, four hundred ninety-four thousand, eight hundred thirty-one".