1131012331 has 2 divisors, whose sum is σ = 1131012332. Its totient is φ = 1131012330.

The previous prime is 1131012317. The next prime is 1131012341. The reversal of 1131012331 is 1332101311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131012331 - 2⁵ = 1131012299 is a prime.

It is a super-2 number, since 2×1131012331² = 2558377785748107122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1131012341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565506165 + 565506166.

It is an arithmetic number, because the mean of its divisors is an integer number (565506166).

Almost surely, 2^1131012331 is an apocalyptic number.

1131012331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131012331 is an equidigital number, since it uses as much as digits as its factorization.

1131012331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1131012331 is about 33630.5267725619. The cubic root of 1131012331 is about 1041.8913840462.

Adding to 1131012331 its reverse (1332101311), we get a palindrome (2463113642).

The spelling of 1131012331 in words is "one billion, one hundred thirty-one million, twelve thousand, three hundred thirty-one".