130252431 has 4 divisors (see below), whose sum is σ = 173669912. Its totient is φ = 86834952.

The previous prime is 130252399. The next prime is 130252433. The reversal of 130252431 is 134252031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134252031 = 3 ⋅44750677.

It is not a de Polignac number, because 130252431 - 2⁵ = 130252399 is a prime.

It is a super-2 number, since 2×130252431² = 33931391562819522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130252398 and 130252407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130252433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21708736 + ... + 21708741.

It is an arithmetic number, because the mean of its divisors is an integer number (43417478).

Almost surely, 2^130252431 is an apocalyptic number.

130252431 is a deficient number, since it is larger than the sum of its proper divisors (43417481).

130252431 is an equidigital number, since it uses as much as digits as its factorization.

130252431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43417480.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 130252431 is about 11412.8187140601. The cubic root of 130252431 is about 506.9073781684.

The spelling of 130252431 in words is "one hundred thirty million, two hundred fifty-two thousand, four hundred thirty-one".