30130931 has 2 divisors, whose sum is σ = 30130932. Its totient is φ = 30130930.

The previous prime is 30130921. The next prime is 30130939. The reversal of 30130931 is 13903103.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30130931 - 2¹⁰ = 30129907 is a prime.

It is a super-2 number, since 2×30130931² = 1815746005853522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30130939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15065465 + 15065466.

It is an arithmetic number, because the mean of its divisors is an integer number (15065466).

Almost surely, 2^30130931 is an apocalyptic number.

30130931 is a deficient number, since it is larger than the sum of its proper divisors (1).

30130931 is an equidigital number, since it uses as much as digits as its factorization.

30130931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 20.

The square root of 30130931 is about 5489.1648727288. The cubic root of 30130931 is about 311.1746312997.

The spelling of 30130931 in words is "thirty million, one hundred thirty thousand, nine hundred thirty-one".