1321331159 has 2 divisors, whose sum is σ = 1321331160. Its totient is φ = 1321331158.

The previous prime is 1321331111. The next prime is 1321331177. The reversal of 1321331159 is 9511331231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321331159 - 2¹⁶ = 1321265623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321331189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660665579 + 660665580.

It is an arithmetic number, because the mean of its divisors is an integer number (660665580).

Almost surely, 2^1321331159 is an apocalyptic number.

1321331159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321331159 is an equidigital number, since it uses as much as digits as its factorization.

1321331159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 29.

The square root of 1321331159 is about 36350.1191057196. The cubic root of 1321331159 is about 1097.3299315314.

The spelling of 1321331159 in words is "one billion, three hundred twenty-one million, three hundred thirty-one thousand, one hundred fifty-nine".