130993231 has 4 divisors (see below), whose sum is σ = 131614264. Its totient is φ = 130372200.

The previous prime is 130993217. The next prime is 130993243. The reversal of 130993231 is 132399031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132399031 = 659 ⋅200909.

It is a cyclic number.

It is not a de Polignac number, because 130993231 - 2¹⁵ = 130960463 is a prime.

It is a super-2 number, since 2×130993231² = 34318453135638722, 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 = 130993193 and 130993202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130993831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310200 + ... + 310621.

It is an arithmetic number, because the mean of its divisors is an integer number (32903566).

Almost surely, 2^130993231 is an apocalyptic number.

130993231 is a deficient number, since it is larger than the sum of its proper divisors (621033).

130993231 is an equidigital number, since it uses as much as digits as its factorization.

130993231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621032.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 130993231 is about 11445.2274333016. The cubic root of 130993231 is about 507.8665600596.

The spelling of 130993231 in words is "one hundred thirty million, nine hundred ninety-three thousand, two hundred thirty-one".