1231001013112 has 16 divisors (see below), whose sum is σ = 2485675122840. Its totient is φ = 568154313696.

The previous prime is 1231001013059. The next prime is 1231001013127. The reversal of 1231001013112 is 2113101001321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5918273998 + ... + 5918274205.

Almost surely, 2^{1231001013112} is an apocalyptic number.

It is an amenable number.

1231001013112 is an abundant number, since it is smaller than the sum of its proper divisors (1254674109728).

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

1231001013112 is a wasteful number, since it uses less digits than its factorization.

1231001013112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11836548222 (or 11836548218 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1231001013112 its reverse (2113101001321), we get a palindrome (3344102014433).

The spelling of 1231001013112 in words is "one trillion, two hundred thirty-one billion, one million, thirteen thousand, one hundred twelve".