31321312311023 has 6 divisors (see below), whose sum is σ = 36434995953696. Its totient is φ = 26846839123692.

The previous prime is 31321312311019. The next prime is 31321312311101. The reversal of 31321312311023 is 32011321312313.

It is not a de Polignac number, because 31321312311023 - 2² = 31321312311019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31321312310983 and 31321312311001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321312311323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 319605227615 + ... + 319605227712.

It is an arithmetic number, because the mean of its divisors is an integer number (6072499325616).

Almost surely, 2^{31321312311023} is an apocalyptic number.

31321312311023 is a deficient number, since it is larger than the sum of its proper divisors (5113683642673).

31321312311023 is an equidigital number, since it uses as much as digits as its factorization.

31321312311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639210455341 (or 639210455334 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31321312311023 its reverse (32011321312313), we get a palindrome (63332633623336).

The spelling of 31321312311023 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred twelve million, three hundred eleven thousand, twenty-three".