1231001013113 has 16 divisors (see below), whose sum is σ = 1275214617600. Its totient is φ = 1186906271040.

The previous prime is 1231001013059. The next prime is 1231001013127. The reversal of 1231001013113 is 3113101001321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231001013113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231001013091 and 1231001013100.

It is not an unprimeable number, because it can be changed into a prime (1231001012113) 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, 68997248 + ... + 69015086.

It is an arithmetic number, because the mean of its divisors is an integer number (79700913600).

Almost surely, 2^{1231001013113} is an apocalyptic number.

It is an amenable number.

1231001013113 is a deficient number, since it is larger than the sum of its proper divisors (44213604487).

1231001013113 is a wasteful number, since it uses less digits than its factorization.

1231001013113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21032.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1231001013113 its reverse (3113101001321), we get a palindrome (4344102014434).

The spelling of 1231001013113 in words is "one trillion, two hundred thirty-one billion, one million, thirteen thousand, one hundred thirteen".