1301332391 has 2 divisors, whose sum is σ = 1301332392. Its totient is φ = 1301332390.

The previous prime is 1301332313. The next prime is 1301332397. The reversal of 1301332391 is 1932331031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1301332391 - 2¹⁴ = 1301316007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1301332391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301332397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650666195 + 650666196.

It is an arithmetic number, because the mean of its divisors is an integer number (650666196).

Almost surely, 2^1301332391 is an apocalyptic number.

1301332391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301332391 is an equidigital number, since it uses as much as digits as its factorization.

1301332391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 1301332391 is about 36073.9849614650. The cubic root of 1301332391 is about 1091.7656178148.

The spelling of 1301332391 in words is "one billion, three hundred one million, three hundred thirty-two thousand, three hundred ninety-one".