1330331081 has 2 divisors, whose sum is σ = 1330331082. Its totient is φ = 1330331080.

The previous prime is 1330330933. The next prime is 1330331089. The reversal of 1330331081 is 1801330331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1202979856 + 127351225 = 34684^2 + 11285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330331081 - 2³⁰ = 256589257 is a prime.

It is a super-2 number, since 2×1330331081² = 3539561570149257122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1330331089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665165540 + 665165541.

It is an arithmetic number, because the mean of its divisors is an integer number (665165541).

Almost surely, 2^1330331081 is an apocalyptic number.

It is an amenable number.

1330331081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330331081 is an equidigital number, since it uses as much as digits as its factorization.

1330331081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1330331081 is about 36473.7039660082. The cubic root of 1330331081 is about 1099.8156939144.

The spelling of 1330331081 in words is "one billion, three hundred thirty million, three hundred thirty-one thousand, eighty-one".