1311232321131 has 16 divisors (see below), whose sum is σ = 1773063894528. Its totient is φ = 861779620800.

The previous prime is 1311232321123. The next prime is 1311232321177.

1311232321131 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1311232321131 - 2³ = 1311232321123 is a prime.

It is a super-2 number, since 2×1311232321131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311232311131) 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, 2778375 + ... + 3215871.

It is an arithmetic number, because the mean of its divisors is an integer number (110816493408).

Almost surely, 2^{1311232321131} is an apocalyptic number.

1311232321131 is a deficient number, since it is larger than the sum of its proper divisors (461831573397).

1311232321131 is a wasteful number, since it uses less digits than its factorization.

1311232321131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451642.

The product of its digits is 648, while the sum is 24.

The spelling of 1311232321131 in words is "one trillion, three hundred eleven billion, two hundred thirty-two million, three hundred twenty-one thousand, one hundred thirty-one".