311442986 has 8 divisors (see below), whose sum is σ = 479790660. Its totient is φ = 151512768.

The previous prime is 311442973. The next prime is 311442997. The reversal of 311442986 is 689244113.

It can be written as a sum of positive squares in 2 ways, for example, as 236083225 + 75359761 = 15365^2 + 8681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2104271 + ... + 2104418.

Almost surely, 2^311442986 is an apocalyptic number.

311442986 is a deficient number, since it is larger than the sum of its proper divisors (168347674).

311442986 is a wasteful number, since it uses less digits than its factorization.

311442986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208728.

The product of its digits is 41472, while the sum is 38.

The square root of 311442986 is about 17647.7473350000. The cubic root of 311442986 is about 677.8384258927.

The spelling of 311442986 in words is "three hundred eleven million, four hundred forty-two thousand, nine hundred eighty-six".