1130331231 has 24 divisors (see below), whose sum is σ = 1696340880. Its totient is φ = 724407936.

The previous prime is 1130331229. The next prime is 1130331253. The reversal of 1130331231 is 1321330311.

It is a happy number.

It is not a de Polignac number, because 1130331231 - 2¹ = 1130331229 is a prime.

It is a super-2 number, since 2×1130331231² = 2555297383547950722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130331221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51520 + ... + 70106.

It is an arithmetic number, because the mean of its divisors is an integer number (70680870).

Almost surely, 2^1130331231 is an apocalyptic number.

1130331231 is a deficient number, since it is larger than the sum of its proper divisors (566009649).

1130331231 is a wasteful number, since it uses less digits than its factorization.

1130331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18855 (or 18852 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1130331231 is about 33620.3990309455. The cubic root of 1130331231 is about 1041.6821983761.

Adding to 1130331231 its reverse (1321330311), we get a palindrome (2451661542).

The spelling of 1130331231 in words is "one billion, one hundred thirty million, three hundred thirty-one thousand, two hundred thirty-one".