31322103023221 has 4 divisors (see below), whose sum is σ = 32683933589472. Its totient is φ = 29960272456972.

The previous prime is 31322103023203. The next prime is 31322103023231. The reversal of 31322103023221 is 12232030122313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31322103023221 - 2¹³ = 31322103015029 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 (31322103023231) 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, 680915283091 + ... + 680915283136.

It is an arithmetic number, because the mean of its divisors is an integer number (8170983397368).

Almost surely, 2^{31322103023221} is an apocalyptic number.

It is an amenable number.

31322103023221 is a deficient number, since it is larger than the sum of its proper divisors (1361830566251).

31322103023221 is a wasteful number, since it uses less digits than its factorization.

31322103023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361830566250.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31322103023221 its reverse (12232030122313), we get a palindrome (43554133145534).

The spelling of 31322103023221 in words is "thirty-one trillion, three hundred twenty-two billion, one hundred three million, twenty-three thousand, two hundred twenty-one".