311431233431323 has 4 divisors (see below), whose sum is σ = 327822350980360. Its totient is φ = 295040115882288.

The previous prime is 311431233431257. The next prime is 311431233431413. The reversal of 311431233431323 is 323134332134113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311431233431323 - 2²⁹ = 311430696560411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311431233434323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8195558774490 + ... + 8195558774527.

It is an arithmetic number, because the mean of its divisors is an integer number (81955587745090).

Almost surely, 2^{311431233431323} is an apocalyptic number.

311431233431323 is a deficient number, since it is larger than the sum of its proper divisors (16391117549037).

311431233431323 is a wasteful number, since it uses less digits than its factorization.

311431233431323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16391117549036.

The product of its digits is 139968, while the sum is 37.

Adding to 311431233431323 its reverse (323134332134113), we get a palindrome (634565565565436).

The spelling of 311431233431323 in words is "three hundred eleven trillion, four hundred thirty-one billion, two hundred thirty-three million, four hundred thirty-one thousand, three hundred twenty-three".