311323316 has 6 divisors (see below), whose sum is σ = 544815810. Its totient is φ = 155661656.

The previous prime is 311323301. The next prime is 311323391. The reversal of 311323316 is 613323113.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 302620816 + 8702500 = 17396^2 + 2950^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311323291 and 311323300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38915411 + ... + 38915418.

It is an arithmetic number, because the mean of its divisors is an integer number (90802635).

Almost surely, 2^311323316 is an apocalyptic number.

It is an amenable number.

311323316 is a deficient number, since it is larger than the sum of its proper divisors (233492494).

311323316 is a wasteful number, since it uses less digits than its factorization.

311323316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77830833 (or 77830831 counting only the distinct ones).

The product of its digits is 972, while the sum is 23.

The square root of 311323316 is about 17644.3564915244. The cubic root of 311323316 is about 677.7515963928.

Adding to 311323316 its reverse (613323113), we get a palindrome (924646429).

The spelling of 311323316 in words is "three hundred eleven million, three hundred twenty-three thousand, three hundred sixteen".