1313312032231 has 4 divisors (see below), whose sum is σ = 1317507917632. Its totient is φ = 1309116146832.

The previous prime is 1313312032217. The next prime is 1313312032247. The reversal of 1313312032231 is 1322302133131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1313312032231 - 2³⁵ = 1278952293863 is a prime.

It is a super-2 number, since 2×1313312032231² (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 = 1313312032196 and 1313312032205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313312038231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2097942231 + ... + 2097942856.

It is an arithmetic number, because the mean of its divisors is an integer number (329376979408).

Almost surely, 2^{1313312032231} is an apocalyptic number.

1313312032231 is a deficient number, since it is larger than the sum of its proper divisors (4195885401).

1313312032231 is an equidigital number, since it uses as much as digits as its factorization.

1313312032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195885400.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1313312032231 its reverse (1322302133131), we get a palindrome (2635614165362).

The spelling of 1313312032231 in words is "one trillion, three hundred thirteen billion, three hundred twelve million, thirty-two thousand, two hundred thirty-one".