312490628 has 6 divisors (see below), whose sum is σ = 546858606. Its totient is φ = 156245312.

The previous prime is 312490621. The next prime is 312490649. The reversal of 312490628 is 826094213.

312490628 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 310393924 + 2096704 = 17618^2 + 1448^2 .

It is not an unprimeable number, because it can be changed into a prime (312490621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39061325 + ... + 39061332.

It is an arithmetic number, because the mean of its divisors is an integer number (91143101).

Almost surely, 2^312490628 is an apocalyptic number.

It is an amenable number.

312490628 is a deficient number, since it is larger than the sum of its proper divisors (234367978).

312490628 is a wasteful number, since it uses less digits than its factorization.

312490628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78122661 (or 78122659 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 312490628 is about 17677.4044474861. The cubic root of 312490628 is about 678.5976202084.

The spelling of 312490628 in words is "three hundred twelve million, four hundred ninety thousand, six hundred twenty-eight".