123131332032312 has 32 divisors (see below), whose sum is σ = 309390910448400. Its totient is φ = 40835433295104.

The previous prime is 123131332032227. The next prime is 123131332032323. The reversal of 123131332032312 is 213230233131321.

It is a super-2 number, since 2×123131332032312² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123131332032312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13021498237 + ... + 13021507692.

Almost surely, 2^{123131332032312} is an apocalyptic number.

123131332032312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123131332032312 is an abundant number, since it is smaller than the sum of its proper divisors (186259578416088).

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

123131332032312 is a wasteful number, since it uses less digits than its factorization.

123131332032312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26043006135 (or 26043006131 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 123131332032312 its reverse (213230233131321), we get a palindrome (336361565163633).

The spelling of 123131332032312 in words is "one hundred twenty-three trillion, one hundred thirty-one billion, three hundred thirty-two million, thirty-two thousand, three hundred twelve".