5129994231 has 12 divisors (see below), whose sum is σ = 7416569680. Its totient is φ = 3416960160.

The previous prime is 5129994223. The next prime is 5129994257. The reversal of 5129994231 is 1324999215.

5129994231 is a `hidden beast` number, since 512 + 9 + 99 + 42 + 3 + 1 = 666.

It is not a de Polignac number, because 5129994231 - 2³ = 5129994223 is a prime.

It is a super-2 number, since 2×5129994231² = 52633681620186562722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5129994271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242275 + ... + 262596.

Almost surely, 2^5129994231 is an apocalyptic number.

5129994231 is a deficient number, since it is larger than the sum of its proper divisors (2286575449).

5129994231 is a wasteful number, since it uses less digits than its factorization.

5129994231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506006 (or 506003 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 5129994231 is about 71623.9780450653. The cubic root of 5129994231 is about 1724.6684771844.

It can be divided in two parts, 5129994 and 231, that added together give a square (5130225 = 2265²).

The spelling of 5129994231 in words is "five billion, one hundred twenty-nine million, nine hundred ninety-four thousand, two hundred thirty-one".