311431044421403 has 32 divisors (see below), whose sum is σ = 332085442042368. Its totient is φ = 291043629760000.

The previous prime is 311431044421391. The next prime is 311431044421429. The reversal of 311431044421403 is 304124440134113.

It is a cyclic number.

It is not a de Polignac number, because 311431044421403 - 2²⁸ = 311430775985947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311431044421493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8464851938 + ... + 8464888728.

It is an arithmetic number, because the mean of its divisors is an integer number (10377670063824).

Almost surely, 2^{311431044421403} is an apocalyptic number.

311431044421403 is a deficient number, since it is larger than the sum of its proper divisors (20654397620965).

311431044421403 is a wasteful number, since it uses less digits than its factorization.

311431044421403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43123.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 311431044421403 its reverse (304124440134113), we get a palindrome (615555484555516).

The spelling of 311431044421403 in words is "three hundred eleven trillion, four hundred thirty-one billion, forty-four million, four hundred twenty-one thousand, four hundred three".