13451391 has 6 divisors (see below), whose sum is σ = 19429800. Its totient is φ = 8967588.

The previous prime is 13451381. The next prime is 13451401. The reversal of 13451391 is 19315431.

It is an interprime number because it is at equal distance from previous prime (13451381) and next prime (13451401).

It is not a de Polignac number, because 13451391 - 2⁵ = 13451359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13451311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 747291 + ... + 747308.

It is an arithmetic number, because the mean of its divisors is an integer number (3238300).

Almost surely, 2^13451391 is an apocalyptic number.

13451391 is a deficient number, since it is larger than the sum of its proper divisors (5978409).

13451391 is a wasteful number, since it uses less digits than its factorization.

13451391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494605 (or 1494602 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 13451391 is about 3667.6138019154. The cubic root of 13451391 is about 237.8240289991.

The spelling of 13451391 in words is "thirteen million, four hundred fifty-one thousand, three hundred ninety-one".