311423986 has 32 divisors (see below), whose sum is σ = 504327168. Its totient is φ = 143700480.

The previous prime is 311423977. The next prime is 311423989. The reversal of 311423986 is 689324113.

It is a super-2 number, since 2×311423986² = 193969798112256392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311423989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 672391 + ... + 672853.

It is an arithmetic number, because the mean of its divisors is an integer number (15760224).

Almost surely, 2^311423986 is an apocalyptic number.

311423986 is a deficient number, since it is larger than the sum of its proper divisors (192903182).

311423986 is a wasteful number, since it uses less digits than its factorization.

311423986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826.

The product of its digits is 31104, while the sum is 37.

The square root of 311423986 is about 17647.2090144589. The cubic root of 311423986 is about 677.8246414629.

The spelling of 311423986 in words is "three hundred eleven million, four hundred twenty-three thousand, nine hundred eighty-six".