4000312 has 16 divisors (see below), whose sum is σ = 7521840. Its totient is φ = 1994496.

The previous prime is 4000309. The next prime is 4000343. The reversal of 4000312 is 2130004.

It is a congruent number.

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, 5013 + ... + 5755.

It is an arithmetic number, because the mean of its divisors is an integer number (470115).

Almost surely, 2^4000312 is an apocalyptic number.

It is an amenable number.

4000312 is a deficient number, since it is larger than the sum of its proper divisors (3521528).

4000312 is a wasteful number, since it uses less digits than its factorization.

4000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422 (or 1418 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 4000312 is about 2000.0779984791. The cubic root of 4000312 is about 158.7442323323.

Adding to 4000312 its reverse (2130004), we get a palindrome (6130316).

The spelling of 4000312 in words is "four million, three hundred twelve", and thus it is an aban number.