30240131 has 2 divisors, whose sum is σ = 30240132. Its totient is φ = 30240130.

The previous prime is 30240121. The next prime is 30240139. The reversal of 30240131 is 13104203.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30240131 is a prime.

It is a super-2 number, since 2×30240131² = 1828931045794322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (30240139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15120065 + 15120066.

It is an arithmetic number, because the mean of its divisors is an integer number (15120066).

Almost surely, 2^30240131 is an apocalyptic number.

30240131 is a deficient number, since it is larger than the sum of its proper divisors (1).

30240131 is an equidigital number, since it uses as much as digits as its factorization.

30240131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30240131 is about 5499.1027449940. The cubic root of 30240131 is about 311.5500959892.

Adding to 30240131 its reverse (13104203), we get a palindrome (43344334).

The spelling of 30240131 in words is "thirty million, two hundred forty thousand, one hundred thirty-one".