1131230220231 has 8 divisors (see below), whose sum is σ = 1508601975280. Its totient is φ = 754005972672.

The previous prime is 1131230220187. The next prime is 1131230220233. The reversal of 1131230220231 is 1320220321311.

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

It is not a de Polignac number, because 1131230220231 - 2¹⁷ = 1131230089159 is a prime.

It is a super-2 number, since 2×1131230220231² (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 = 1131230220198 and 1131230220207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131230220233) 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, 36858976 + ... + 36889653.

It is an arithmetic number, because the mean of its divisors is an integer number (188575246910).

Almost surely, 2^{1131230220231} is an apocalyptic number.

1131230220231 is a deficient number, since it is larger than the sum of its proper divisors (377371755049).

1131230220231 is an equidigital number, since it uses as much as digits as its factorization.

1131230220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73753745.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1131230220231 its reverse (1320220321311), we get a palindrome (2451450541542).

The spelling of 1131230220231 in words is "one trillion, one hundred thirty-one billion, two hundred thirty million, two hundred twenty thousand, two hundred thirty-one".