1303313312131 has 4 divisors (see below), whose sum is σ = 1305873849600. Its totient is φ = 1300752774664.

The previous prime is 1303313312129. The next prime is 1303313312143. The reversal of 1303313312131 is 1312133133031.

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 1303313312131 - 2¹ = 1303313312129 is a prime.

It is a super-2 number, since 2×1303313312131² (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 = 1303313312096 and 1303313312105.

It is not an unprimeable number, because it can be changed into a prime (1303313312731) 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, 1280267971 + ... + 1280268988.

It is an arithmetic number, because the mean of its divisors is an integer number (326468462400).

Almost surely, 2^{1303313312131} is an apocalyptic number.

1303313312131 is a deficient number, since it is larger than the sum of its proper divisors (2560537469).

1303313312131 is an equidigital number, since it uses as much as digits as its factorization.

1303313312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560537468.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 1303313312131 its reverse (1312133133031), we get a palindrome (2615446445162).

The spelling of 1303313312131 in words is "one trillion, three hundred three billion, three hundred thirteen million, three hundred twelve thousand, one hundred thirty-one".