612813831 has 16 divisors (see below), whose sum is σ = 934464000. Its totient is φ = 349934688.

The previous prime is 612813811. The next prime is 612813833. The reversal of 612813831 is 138318216.

It is not a de Polignac number, because 612813831 - 2⁶ = 612813767 is a prime.

It is a super-2 number, since 2×612813831² = 751081582929793122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 612813792 and 612813801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612813833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23110 + ... + 41948.

It is an arithmetic number, because the mean of its divisors is an integer number (58404000).

Almost surely, 2^612813831 is an apocalyptic number.

612813831 is a deficient number, since it is larger than the sum of its proper divisors (321650169).

612813831 is a wasteful number, since it uses less digits than its factorization.

612813831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20398.

The product of its digits is 6912, while the sum is 33.

The square root of 612813831 is about 24755.0768732396. The cubic root of 612813831 is about 849.3946467210.

The spelling of 612813831 in words is "six hundred twelve million, eight hundred thirteen thousand, eight hundred thirty-one".