311313442 has 24 divisors (see below), whose sum is σ = 536855760. Its totient is φ = 133903080.

The previous prime is 311313413. The next prime is 311313473. The reversal of 311313442 is 244313113.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 360303 + ... + 361165.

It is an arithmetic number, because the mean of its divisors is an integer number (22368990).

Almost surely, 2^311313442 is an apocalyptic number.

311313442 is a deficient number, since it is larger than the sum of its proper divisors (225542318).

311313442 is an equidigital number, since it uses as much as digits as its factorization.

311313442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758 (or 895 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 311313442 is about 17644.0766831251. The cubic root of 311313442 is about 677.7444310766.

Adding to 311313442 its reverse (244313113), we get a palindrome (555626555).

The spelling of 311313442 in words is "three hundred eleven million, three hundred thirteen thousand, four hundred forty-two".