31311331321323 has 16 divisors (see below), whose sum is σ = 41966222851872. Its totient is φ = 20765514432000.

The previous prime is 31311331321321. The next prime is 31311331321331. The reversal of 31311331321323 is 32312313311313.

It is not a de Polignac number, because 31311331321323 - 2¹ = 31311331321321 is a prime.

It is a super-2 number, since 2×31311331321323² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31311331321321) 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, 22331088 + ... + 23691773.

It is an arithmetic number, because the mean of its divisors is an integer number (2622888928242).

Almost surely, 2^{31311331321323} is an apocalyptic number.

31311331321323 is a deficient number, since it is larger than the sum of its proper divisors (10654891530549).

31311331321323 is a wasteful number, since it uses less digits than its factorization.

31311331321323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46024046.

The product of its digits is 8748, while the sum is 30.

Adding to 31311331321323 its reverse (32312313311313), we get a palindrome (63623644632636).

The spelling of 31311331321323 in words is "thirty-one trillion, three hundred eleven billion, three hundred thirty-one million, three hundred twenty-one thousand, three hundred twenty-three".