612312631 has 8 divisors (see below), whose sum is σ = 700289024. Its totient is φ = 524462040.

The previous prime is 612312629. The next prime is 612312637. The reversal of 612312631 is 136213216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 612312631 - 2¹ = 612312629 is a prime.

It is a super-2 number, since 2×612312631² = 749853516164284322, 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 = 612312596 and 612312605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612312637) 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 7 ways as a sum of consecutive naturals, for example, 20775 + ... + 40696.

It is an arithmetic number, because the mean of its divisors is an integer number (87536128).

Almost surely, 2^612312631 is an apocalyptic number.

612312631 is a deficient number, since it is larger than the sum of its proper divisors (87976393).

612312631 is a wasteful number, since it uses less digits than its factorization.

612312631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62901.

The product of its digits is 1296, while the sum is 25.

The square root of 612312631 is about 24744.9516265439. The cubic root of 612312631 is about 849.1630197091.

Adding to 612312631 its reverse (136213216), we get a palindrome (748525847).

The spelling of 612312631 in words is "six hundred twelve million, three hundred twelve thousand, six hundred thirty-one".