311330493 has 16 divisors (see below), whose sum is σ = 461502400. Its totient is φ = 207431280.

The previous prime is 311330483. The next prime is 311330497. The reversal of 311330493 is 394033113.

It is not a de Polignac number, because 311330493 - 2⁴ = 311330477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311330497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85398 + ... + 88968.

It is an arithmetic number, because the mean of its divisors is an integer number (28843900).

Almost surely, 2^311330493 is an apocalyptic number.

It is an amenable number.

311330493 is a deficient number, since it is larger than the sum of its proper divisors (150171907).

311330493 is a wasteful number, since it uses less digits than its factorization.

311330493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809 (or 6803 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 311330493 is about 17644.5598698296. The cubic root of 311330493 is about 677.7568044681.

The spelling of 311330493 in words is "three hundred eleven million, three hundred thirty thousand, four hundred ninety-three".