312006404 has 12 divisors (see below), whose sum is σ = 554161104. Its totient is φ = 153674664.

The previous prime is 312006371. The next prime is 312006419. The reversal of 312006404 is 404600213.

It is a happy number.

It is a super-2 number, since 2×312006404² = 194695992274022432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581834 + ... + 582369.

It is an arithmetic number, because the mean of its divisors is an integer number (46180092).

Almost surely, 2^312006404 is an apocalyptic number.

It is an amenable number.

312006404 is a deficient number, since it is larger than the sum of its proper divisors (242154700).

312006404 is a wasteful number, since it uses less digits than its factorization.

312006404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164274 (or 1164272 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 312006404 is about 17663.7030092787. The cubic root of 312006404 is about 678.2469290237.

Adding to 312006404 its reverse (404600213), we get a palindrome (716606617).

The spelling of 312006404 in words is "three hundred twelve million, six thousand, four hundred four".