31231322320022 has 16 divisors (see below), whose sum is σ = 51121069417152. Its totient is φ = 14191814139720.

The previous prime is 31231322320001. The next prime is 31231322320031. The reversal of 31231322320022 is 22002322313213.

It is a junction number, because it is equal to n+sod(n) for n = 31231322319973 and 31231322320000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211997708 + ... + 212144975.

It is an arithmetic number, because the mean of its divisors is an integer number (3195066838572).

Almost surely, 2^{31231322320022} is an apocalyptic number.

31231322320022 is a deficient number, since it is larger than the sum of its proper divisors (19889747097130).

31231322320022 is a wasteful number, since it uses less digits than its factorization.

31231322320022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424146043.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 31231322320022 its reverse (22002322313213), we get a palindrome (53233644633235).

The spelling of 31231322320022 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty-two million, three hundred twenty thousand, twenty-two".