31231331232223 has 8 divisors (see below), whose sum is σ = 31627241768000. Its totient is φ = 30835435127328.

The previous prime is 31231331232187. The next prime is 31231331232229. The reversal of 31231331232223 is 32223213313213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31231331232223 - 2¹⁷ = 31231331101151 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 (31231331232229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781753 + ... + 7941901.

It is an arithmetic number, because the mean of its divisors is an integer number (3953405221000).

Almost surely, 2^{31231331232223} is an apocalyptic number.

31231331232223 is a deficient number, since it is larger than the sum of its proper divisors (395910535777).

31231331232223 is an equidigital number, since it uses as much as digits as its factorization.

31231331232223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7215441.

The product of its digits is 23328, while the sum is 31.

Adding to 31231331232223 its reverse (32223213313213), we get a palindrome (63454544545436).

The spelling of 31231331232223 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-three".