123131223303012 has 72 divisors (see below), whose sum is σ = 322000189842240. Its totient is φ = 39626086772160.

The previous prime is 123131223303001. The next prime is 123131223303013. The reversal of 123131223303012 is 210303322131321.

123131223303012 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 3 + 1 + 22 + 330 + 301 + 2 = 666.

It is a super-2 number, since 2×123131223303012² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123131223303013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14132937 + ... + 21118767.

It is an arithmetic number, because the mean of its divisors is an integer number (4472224858920).

Almost surely, 2^{123131223303012} is an apocalyptic number.

123131223303012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123131223303012 is an abundant number, since it is smaller than the sum of its proper divisors (198868966539228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123131223303012 is a wasteful number, since it uses less digits than its factorization.

123131223303012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002753 (or 7002748 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 123131223303012 its reverse (210303322131321), we get a palindrome (333434545434333).

The spelling of 123131223303012 in words is "one hundred twenty-three trillion, one hundred thirty-one billion, two hundred twenty-three million, three hundred three thousand, twelve".