612712431 has 20 divisors (see below), whose sum is σ = 924734272. Its totient is φ = 404258688.

The previous prime is 612712423. The next prime is 612712447. The reversal of 612712431 is 134217216.

612712431 is a `hidden beast` number, since 612 + 7 + 1 + 2 + 43 + 1 = 666.

It is not a de Polignac number, because 612712431 - 2³ = 612712423 is a prime.

It is a super-2 number, since 2×612712431² = 750833046203859522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 612712395 and 612712404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612712421) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31135 + ... + 46848.

Almost surely, 2^612712431 is an apocalyptic number.

612712431 is a deficient number, since it is larger than the sum of its proper divisors (312021841).

612712431 is an equidigital number, since it uses as much as digits as its factorization.

612712431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78092 (or 78083 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 612712431 is about 24753.0287237744. The cubic root of 612712431 is about 849.3477954242.

Adding to 612712431 its reverse (134217216), we get a palindrome (746929647).

The spelling of 612712431 in words is "six hundred twelve million, seven hundred twelve thousand, four hundred thirty-one".