1131321211231 has 8 divisors (see below), whose sum is σ = 1198040743584. Its totient is φ = 1064620704000.

The previous prime is 1131321211177. The next prime is 1131321211253. The reversal of 1131321211231 is 1321121231311.

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 1131321211231 - 2²⁹ = 1130784340319 is a prime.

It is a super-2 number, since 2×1131321211231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131321215231) 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, 4633755 + ... + 4871788.

It is an arithmetic number, because the mean of its divisors is an integer number (149755092948).

Almost surely, 2^{1131321211231} is an apocalyptic number.

1131321211231 is a deficient number, since it is larger than the sum of its proper divisors (66719532353).

1131321211231 is an equidigital number, since it uses as much as digits as its factorization.

1131321211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9512561.

The product of its digits is 216, while the sum is 22.

Adding to 1131321211231 its reverse (1321121231311), we get a palindrome (2452442442542).

The spelling of 1131321211231 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-one million, two hundred eleven thousand, two hundred thirty-one".