310942989 has 64 divisors (see below), whose sum is σ = 551649280. Its totient is φ = 169361280.

The previous prime is 310942987. The next prime is 310942991. The reversal of 310942989 is 989249013.

It is an interprime number because it is at equal distance from previous prime (310942987) and next prime (310942991).

It is not a de Polignac number, because 310942989 - 2¹ = 310942987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310942987) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 427344 + ... + 428070.

It is an arithmetic number, because the mean of its divisors is an integer number (8619520).

Almost surely, 2^310942989 is an apocalyptic number.

It is an amenable number.

310942989 is a deficient number, since it is larger than the sum of its proper divisors (240706291).

310942989 is a wasteful number, since it uses less digits than its factorization.

310942989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 310942989 is about 17633.5756158528. The cubic root of 310942989 is about 677.4754930020.

The spelling of 310942989 in words is "three hundred ten million, nine hundred forty-two thousand, nine hundred eighty-nine".