1331528039 has 2 divisors, whose sum is σ = 1331528040. Its totient is φ = 1331528038.

The previous prime is 1331528017. The next prime is 1331528047. The reversal of 1331528039 is 9308251331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331528039 - 2²⁰ = 1330479463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331528059) 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 as a sum of consecutive naturals, namely, 665764019 + 665764020.

It is an arithmetic number, because the mean of its divisors is an integer number (665764020).

Almost surely, 2^1331528039 is an apocalyptic number.

1331528039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331528039 is an equidigital number, since it uses as much as digits as its factorization.

1331528039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1331528039 is about 36490.1087830661. The cubic root of 1331528039 is about 1100.1454460570.

The spelling of 1331528039 in words is "one billion, three hundred thirty-one million, five hundred twenty-eight thousand, thirty-nine".