13591013 has 2 divisors, whose sum is σ = 13591014. Its totient is φ = 13591012.

The previous prime is 13590979. The next prime is 13591027. The reversal of 13591013 is 31019531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9721924 + 3869089 = 3118^2 + 1967^2 .

It is a cyclic number.

It is not a de Polignac number, because 13591013 - 2¹² = 13586917 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13591013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13591043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6795506 + 6795507.

It is an arithmetic number, because the mean of its divisors is an integer number (6795507).

Almost surely, 2^13591013 is an apocalyptic number.

It is an amenable number.

13591013 is a deficient number, since it is larger than the sum of its proper divisors (1).

13591013 is an equidigital number, since it uses as much as digits as its factorization.

13591013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 13591013 is about 3686.5991102912. The cubic root of 13591013 is about 238.6440491850.

The spelling of 13591013 in words is "thirteen million, five hundred ninety-one thousand, thirteen".