123031321111228 has 48 divisors (see below), whose sum is σ = 221238646776000. Its totient is φ = 59822012574720.

The previous prime is 123031321111219. The next prime is 123031321111229. The reversal of 123031321111228 is 822111123130321.

It is a self number, because there is not a number n which added to its sum of digits gives 123031321111228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031321111229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3035616468 + ... + 3035656996.

It is an arithmetic number, because the mean of its divisors is an integer number (4609138474500).

Almost surely, 2^{123031321111228} is an apocalyptic number.

It is an amenable number.

123031321111228 is a deficient number, since it is larger than the sum of its proper divisors (98207325664772).

123031321111228 is a wasteful number, since it uses less digits than its factorization.

123031321111228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50710 (or 50708 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

Adding to 123031321111228 its reverse (822111123130321), we get a palindrome (945142444241549).

The spelling of 123031321111228 in words is "one hundred twenty-three trillion, thirty-one billion, three hundred twenty-one million, one hundred eleven thousand, two hundred twenty-eight".