311431477 has 16 divisors (see below), whose sum is σ = 376952832. Its totient is φ = 251515440.

The previous prime is 311431469. The next prime is 311431537. The reversal of 311431477 is 774134113.

It is a cyclic number.

It is not a de Polignac number, because 311431477 - 2³ = 311431469 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 (311431577) 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, 3649 + ... + 25222.

It is an arithmetic number, because the mean of its divisors is an integer number (23559552).

Almost surely, 2^311431477 is an apocalyptic number.

It is an amenable number.

311431477 is a deficient number, since it is larger than the sum of its proper divisors (65521355).

311431477 is a wasteful number, since it uses less digits than its factorization.

311431477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28968.

The product of its digits is 7056, while the sum is 31.

The square root of 311431477 is about 17647.4212563762. The cubic root of 311431477 is about 677.8300762227.

The spelling of 311431477 in words is "three hundred eleven million, four hundred thirty-one thousand, four hundred seventy-seven".