311123312 has 20 divisors (see below), whose sum is σ = 603264960. Its totient is φ = 155442048.

The previous prime is 311123311. The next prime is 311123321. The reversal of 311123312 is 213321113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311123311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16268 + ... + 29780.

It is an arithmetic number, because the mean of its divisors is an integer number (30163248).

Almost surely, 2^311123312 is an apocalyptic number.

It is an amenable number.

311123312 is a deficient number, since it is larger than the sum of its proper divisors (292141648).

311123312 is a wasteful number, since it uses less digits than its factorization.

311123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14960 (or 14954 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 311123312 is about 17638.6879330635. The cubic root of 311123312 is about 677.6064289077.

Adding to 311123312 its reverse (213321113), we get a palindrome (524444425).

The spelling of 311123312 in words is "three hundred eleven million, one hundred twenty-three thousand, three hundred twelve".