31223253444223 has 4 divisors (see below), whose sum is σ = 31574076516720. Its totient is φ = 30872430371728.

The previous prime is 31223253444221. The next prime is 31223253444247. The reversal of 31223253444223 is 32244435232213.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31223253444223 - 2¹ = 31223253444221 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 (31223253444221) 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, 175411536115 + ... + 175411536292.

It is an arithmetic number, because the mean of its divisors is an integer number (7893519129180).

Almost surely, 2^{31223253444223} is an apocalyptic number.

31223253444223 is a deficient number, since it is larger than the sum of its proper divisors (350823072497).

31223253444223 is an equidigital number, since it uses as much as digits as its factorization.

31223253444223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350823072496.

The product of its digits is 829440, while the sum is 40.

Adding to 31223253444223 its reverse (32244435232213), we get a palindrome (63467688676436).

The spelling of 31223253444223 in words is "thirty-one trillion, two hundred twenty-three billion, two hundred fifty-three million, four hundred forty-four thousand, two hundred twenty-three".