612531 has 6 divisors (see below), whose sum is σ = 884780. Its totient is φ = 408348.

The previous prime is 612511. The next prime is 612553. The reversal of 612531 is 135216.

612531 is a `hidden beast` number, since 612 + 53 + 1 = 666.

612531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 612531 - 2¹³ = 604339 is a prime.

It is a super-2 number, since 2×612531² = 750388451922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34021 + ... + 34038.

2⁶¹²⁵³¹ is an apocalyptic number.

612531 is a deficient number, since it is larger than the sum of its proper divisors (272249).

612531 is a wasteful number, since it uses less digits than its factorization.

612531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68065 (or 68062 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 612531 is about 782.6435970479. The cubic root of 612531 is about 84.9263953356.

Adding to 612531 its reverse (135216), we get a palindrome (747747).

The spelling of 612531 in words is "six hundred twelve thousand, five hundred thirty-one".