31223231123 has 8 divisors (see below), whose sum is σ = 35864829792. Its totient is φ = 26626916736.

The previous prime is 31223231063. The next prime is 31223231153. The reversal of 31223231123 is 32113232213.

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

It is not a de Polignac number, because 31223231123 - 2¹⁰ = 31223230099 is a prime.

It is a super-2 number, since 2×31223231123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31223231153) 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, 11319590 + ... + 11322347.

It is an arithmetic number, because the mean of its divisors is an integer number (4483103724).

Almost surely, 2^31223231123 is an apocalyptic number.

31223231123 is a deficient number, since it is larger than the sum of its proper divisors (4641598669).

31223231123 is a wasteful number, since it uses less digits than its factorization.

31223231123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22642141.

The product of its digits is 1296, while the sum is 23.

Adding to 31223231123 its reverse (32113232213), we get a palindrome (63336463336).

The spelling of 31223231123 in words is "thirty-one billion, two hundred twenty-three million, two hundred thirty-one thousand, one hundred twenty-three".