31222315421311 has 12 divisors (see below), whose sum is σ = 36319931756400. Its totient is φ = 26761914315360.

The previous prime is 31222315421299. The next prime is 31222315421333. The reversal of 31222315421311 is 11312451322213.

It is not a de Polignac number, because 31222315421311 - 2⁷ = 31222315421183 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 (31222315421411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28100371 + ... + 29190331.

It is an arithmetic number, because the mean of its divisors is an integer number (3026660979700).

Almost surely, 2^{31222315421311} is an apocalyptic number.

31222315421311 is a deficient number, since it is larger than the sum of its proper divisors (5097616335089).

31222315421311 is a wasteful number, since it uses less digits than its factorization.

31222315421311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674574 (or 1674567 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

Adding to 31222315421311 its reverse (11312451322213), we get a palindrome (42534766743524).

The spelling of 31222315421311 in words is "thirty-one trillion, two hundred twenty-two billion, three hundred fifteen million, four hundred twenty-one thousand, three hundred eleven".