310312989 has 12 divisors (see below), whose sum is σ = 512262816. Its totient is φ = 177321672.

The previous prime is 310312949. The next prime is 310313009. The reversal of 310312989 is 989213013.

It is not a de Polignac number, because 310312989 - 2¹¹ = 310310941 is a prime.

It is a super-2 number, since 2×310312989² = 192588302284228242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310312909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2462739 + ... + 2462864.

It is an arithmetic number, because the mean of its divisors is an integer number (42688568).

Almost surely, 2^310312989 is an apocalyptic number.

It is an amenable number.

310312989 is a deficient number, since it is larger than the sum of its proper divisors (201949827).

310312989 is a wasteful number, since it uses less digits than its factorization.

310312989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4925616 (or 4925613 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 310312989 is about 17615.7029096202. The cubic root of 310312989 is about 677.0176404344.

The spelling of 310312989 in words is "three hundred ten million, three hundred twelve thousand, nine hundred eighty-nine".