31022402223 has 4 divisors (see below), whose sum is σ = 41363202968. Its totient is φ = 20681601480.

The previous prime is 31022402207. The next prime is 31022402227. The reversal of 31022402223 is 32220422013.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31022402223 - 2⁴ = 31022402207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31022402223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31022402227) 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, 5170400368 + ... + 5170400373.

It is an arithmetic number, because the mean of its divisors is an integer number (10340800742).

Almost surely, 2^31022402223 is an apocalyptic number.

31022402223 is a deficient number, since it is larger than the sum of its proper divisors (10340800745).

31022402223 is a wasteful number, since it uses less digits than its factorization.

31022402223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10340800744.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 31022402223 its reverse (32220422013), we get a palindrome (63242824236).

The spelling of 31022402223 in words is "thirty-one billion, twenty-two million, four hundred two thousand, two hundred twenty-three".