311323242 has 16 divisors (see below), whose sum is σ = 623160000. Its totient is φ = 103688832.

The previous prime is 311323223. The next prime is 311323267. The reversal of 311323242 is 242323113.

311323242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×311323242² = 193844322018781128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13278 + ... + 28265.

It is an arithmetic number, because the mean of its divisors is an integer number (38947500).

Almost surely, 2^311323242 is an apocalyptic number.

311323242 is an abundant number, since it is smaller than the sum of its proper divisors (311836758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311323242 is a wasteful number, since it uses less digits than its factorization.

311323242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42797.

The product of its digits is 864, while the sum is 21.

The square root of 311323242 is about 17644.3543945365. The cubic root of 311323242 is about 677.7515426934.

Adding to 311323242 its reverse (242323113), we get a palindrome (553646355).

The spelling of 311323242 in words is "three hundred eleven million, three hundred twenty-three thousand, two hundred forty-two".