1322310391 has 2 divisors, whose sum is σ = 1322310392. Its totient is φ = 1322310390.

The previous prime is 1322310383. The next prime is 1322310397. The reversal of 1322310391 is 1930132231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1322310391 - 2³ = 1322310383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322310397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661155195 + 661155196.

It is an arithmetic number, because the mean of its divisors is an integer number (661155196).

Almost surely, 2^1322310391 is an apocalyptic number.

1322310391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322310391 is an equidigital number, since it uses as much as digits as its factorization.

1322310391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1322310391 is about 36363.5860580334. The cubic root of 1322310391 is about 1097.6009398601.

The spelling of 1322310391 in words is "one billion, three hundred twenty-two million, three hundred ten thousand, three hundred ninety-one".