612931 has 4 divisors (see below), whose sum is σ = 668664. Its totient is φ = 557200.

The previous prime is 612929. The next prime is 612947. The reversal of 612931 is 139216.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 612931 - 2¹ = 612929 is a prime.

It is a super-2 number, since 2×612931² = 751368821522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

612931 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (612971) 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, 27850 + ... + 27871.

It is an arithmetic number, because the mean of its divisors is an integer number (167166).

2⁶¹²⁹³¹ is an apocalyptic number.

612931 is a deficient number, since it is larger than the sum of its proper divisors (55733).

612931 is a wasteful number, since it uses less digits than its factorization.

612931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55732.

The product of its digits is 324, while the sum is 22.

The square root of 612931 is about 782.8990995013. The cubic root of 612931 is about 84.9448777559.

It can be divided in two parts, 61 and 2931, that added together give a palindrome (2992).

The spelling of 612931 in words is "six hundred twelve thousand, nine hundred thirty-one".