1231001013203 has 8 divisors (see below), whose sum is σ = 1328073466608. Its totient is φ = 1134268569504.

The previous prime is 1231001013191. The next prime is 1231001013239. The reversal of 1231001013203 is 3023101001321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231001013203 - 2¹⁸ = 1231000751059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231001012203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84994901 + ... + 85009382.

It is an arithmetic number, because the mean of its divisors is an integer number (166009183326).

Almost surely, 2^{1231001013203} is an apocalyptic number.

1231001013203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1231001013203 is a deficient number, since it is larger than the sum of its proper divisors (97072453405).

1231001013203 is a wasteful number, since it uses less digits than its factorization.

1231001013203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170004853.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1231001013203 its reverse (3023101001321), we get a palindrome (4254102014524).

The spelling of 1231001013203 in words is "one trillion, two hundred thirty-one billion, one million, thirteen thousand, two hundred three".