1231203113301 has 48 divisors (see below), whose sum is σ = 1975731264000. Its totient is φ = 679194698112.

The previous prime is 1231203113227. The next prime is 1231203113341. The reversal of 1231203113301 is 1033113021321.

It is a happy number.

It is not a de Polignac number, because 1231203113301 - 2³⁰ = 1230129371477 is a prime.

It is a super-2 number, since 2×1231203113301² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231203113341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44317051 + ... + 44344823.

It is an arithmetic number, because the mean of its divisors is an integer number (41161068000).

Almost surely, 2^{1231203113301} is an apocalyptic number.

It is an amenable number.

1231203113301 is a deficient number, since it is larger than the sum of its proper divisors (744528150699).

1231203113301 is a wasteful number, since it uses less digits than its factorization.

1231203113301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38218 (or 38211 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1231203113301 its reverse (1033113021321), we get a palindrome (2264316134622).

The spelling of 1231203113301 in words is "one trillion, two hundred thirty-one billion, two hundred three million, one hundred thirteen thousand, three hundred one".