1301320311131 has 4 divisors (see below), whose sum is σ = 1303350452664. Its totient is φ = 1299290169600.

The previous prime is 1301320311113. The next prime is 1301320311173. The reversal of 1301320311131 is 1311130231031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301320311131 is a prime.

It is a super-2 number, since 2×1301320311131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301320317131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015069805 + ... + 1015071086.

It is an arithmetic number, because the mean of its divisors is an integer number (325837613166).

Almost surely, 2^{1301320311131} is an apocalyptic number.

1301320311131 is a deficient number, since it is larger than the sum of its proper divisors (2030141533).

1301320311131 is an equidigital number, since it uses as much as digits as its factorization.

1301320311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030141532.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1301320311131 its reverse (1311130231031), we get a palindrome (2612450542162).

The spelling of 1301320311131 in words is "one trillion, three hundred one billion, three hundred twenty million, three hundred eleven thousand, one hundred thirty-one".