312809044 has 24 divisors (see below), whose sum is σ = 581853888. Its totient is φ = 146636160.

The previous prime is 312809041. The next prime is 312809053. The reversal of 312809044 is 440908213.

It is a junction number, because it is equal to n+sod(n) for n = 312808997 and 312809015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312809041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9139 + ... + 26629.

It is an arithmetic number, because the mean of its divisors is an integer number (24243912).

Almost surely, 2^312809044 is an apocalyptic number.

312809044 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

312809044 is a deficient number, since it is larger than the sum of its proper divisors (269044844).

312809044 is a wasteful number, since it uses less digits than its factorization.

312809044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17775 (or 17773 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 312809044 is about 17686.4084539513. The cubic root of 312809044 is about 678.8280303080.

The spelling of 312809044 in words is "three hundred twelve million, eight hundred nine thousand, forty-four".