1330331231 has 2 divisors, whose sum is σ = 1330331232. Its totient is φ = 1330331230.

The previous prime is 1330331213. The next prime is 1330331237. The reversal of 1330331231 is 1321330331.

Together with previous prime (1330331213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1330331231 - 2¹⁴ = 1330314847 is a prime.

It is a super-2 number, since 2×1330331231² = 3539562368347950722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330331237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665165615 + 665165616.

It is an arithmetic number, because the mean of its divisors is an integer number (665165616).

Almost surely, 2^1330331231 is an apocalyptic number.

1330331231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330331231 is an equidigital number, since it uses as much as digits as its factorization.

1330331231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1330331231 is about 36473.7060222841. The cubic root of 1330331231 is about 1099.8157352506.

Adding to 1330331231 its reverse (1321330331), we get a palindrome (2651661562).

The spelling of 1330331231 in words is "one billion, three hundred thirty million, three hundred thirty-one thousand, two hundred thirty-one".