1312320131303 has 4 divisors (see below), whose sum is σ = 1342839204168. Its totient is φ = 1281801058440.

The previous prime is 1312320131281. The next prime is 1312320131371. The reversal of 1312320131303 is 3031310232131.

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 1312320131303 - 2¹² = 1312320127207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312320131503) 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, 15259536368 + ... + 15259536453.

It is an arithmetic number, because the mean of its divisors is an integer number (335709801042).

Almost surely, 2^{1312320131303} is an apocalyptic number.

1312320131303 is a deficient number, since it is larger than the sum of its proper divisors (30519072865).

1312320131303 is an equidigital number, since it uses as much as digits as its factorization.

1312320131303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30519072864.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1312320131303 its reverse (3031310232131), we get a palindrome (4343630363434).

The spelling of 1312320131303 in words is "one trillion, three hundred twelve billion, three hundred twenty million, one hundred thirty-one thousand, three hundred three".