130631239 has 2 divisors, whose sum is σ = 130631240. Its totient is φ = 130631238.

The previous prime is 130631233. The next prime is 130631243. The reversal of 130631239 is 932136031.

It is a strong prime.

It is an emirp because it is prime and its reverse (932136031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130631239 - 2³ = 130631231 is a prime.

It is a super-3 number, since 3×130631239³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130631231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65315619 + 65315620.

It is an arithmetic number, because the mean of its divisors is an integer number (65315620).

Almost surely, 2^130631239 is an apocalyptic number.

130631239 is a deficient number, since it is larger than the sum of its proper divisors (1).

130631239 is an equidigital number, since it uses as much as digits as its factorization.

130631239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 130631239 is about 11429.4023903265. The cubic root of 130631239 is about 507.3983087924.

The spelling of 130631239 in words is "one hundred thirty million, six hundred thirty-one thousand, two hundred thirty-nine".