1313203220231 has 16 divisors (see below), whose sum is σ = 1580833382400. Its totient is φ = 1089292984920.

The previous prime is 1313203220201. The next prime is 1313203220237. The reversal of 1313203220231 is 1320223023131.

It is a de Polignac number, because none of the positive numbers 2^k-1313203220231 is a prime.

It is a super-2 number, since 2×1313203220231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313203220197 and 1313203220206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313203220237) 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, 61740671 + ... + 61761936.

It is an arithmetic number, because the mean of its divisors is an integer number (98802086400).

Almost surely, 2^{1313203220231} is an apocalyptic number.

1313203220231 is a deficient number, since it is larger than the sum of its proper divisors (267630162169).

1313203220231 is an equidigital number, since it uses as much as digits as its factorization.

1313203220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123502659 (or 123502645 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1313203220231 its reverse (1320223023131), we get a palindrome (2633426243362).

The spelling of 1313203220231 in words is "one trillion, three hundred thirteen billion, two hundred three million, two hundred twenty thousand, two hundred thirty-one".