1331112231 has 8 divisors (see below), whose sum is σ = 1972018160. Its totient is φ = 887408136.

The previous prime is 1331112227. The next prime is 1331112247. The reversal of 1331112231 is 1322111331.

It is not a de Polignac number, because 1331112231 - 2² = 1331112227 is a prime.

It is a super-2 number, since 2×1331112231² = 3543719543035594722, which 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 (1331112221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24650200 + ... + 24650253.

It is an arithmetic number, because the mean of its divisors is an integer number (246502270).

Almost surely, 2^1331112231 is an apocalyptic number.

1331112231 is a deficient number, since it is larger than the sum of its proper divisors (640905929).

1331112231 is an equidigital number, since it uses as much as digits as its factorization.

1331112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49300462 (or 49300456 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1331112231 is about 36484.4107942009. The cubic root of 1331112231 is about 1100.0309167619.

Adding to 1331112231 its reverse (1322111331), we get a palindrome (2653223562).

The spelling of 1331112231 in words is "one billion, three hundred thirty-one million, one hundred twelve thousand, two hundred thirty-one".