1131311210331 has 8 divisors (see below), whose sum is σ = 1508448674880. Its totient is φ = 754190609672.

The previous prime is 1131311210297. The next prime is 1131311210387. The reversal of 1131311210331 is 1330121131311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131311210331 - 2⁷ = 1131311210203 is a prime.

It is a super-2 number, since 2×1131311210331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131311210298 and 1131311210307.

It is not an unprimeable number, because it can be changed into a prime (1131311290331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4058601 + ... + 4328378.

It is an arithmetic number, because the mean of its divisors is an integer number (188556084360).

Almost surely, 2^{1131311210331} is an apocalyptic number.

1131311210331 is a deficient number, since it is larger than the sum of its proper divisors (377137464549).

1131311210331 is an equidigital number, since it uses as much as digits as its factorization.

1131311210331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8431945.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 1131311210331 its reverse (1330121131311), we get a palindrome (2461432341642).

The spelling of 1131311210331 in words is "one trillion, one hundred thirty-one billion, three hundred eleven million, two hundred ten thousand, three hundred thirty-one".