393312311 has 16 divisors (see below), whose sum is σ = 464845824. Its totient is φ = 325806624.

The previous prime is 393312263. The next prime is 393312319. The reversal of 393312311 is 113213393.

It is a cyclic number.

It is not a de Polignac number, because 393312311 - 2²² = 389118007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393312319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16946 + ... + 32768.

It is an arithmetic number, because the mean of its divisors is an integer number (29052864).

Almost surely, 2^393312311 is an apocalyptic number.

393312311 is a deficient number, since it is larger than the sum of its proper divisors (71533513).

393312311 is a wasteful number, since it uses less digits than its factorization.

393312311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15950.

The product of its digits is 1458, while the sum is 26.

The square root of 393312311 is about 19832.1030402729. The cubic root of 393312311 is about 732.6769240305.

The spelling of 393312311 in words is "three hundred ninety-three million, three hundred twelve thousand, three hundred eleven".