13381797 has 16 divisors (see below), whose sum is σ = 20962368. Its totient is φ = 7486080.

The previous prime is 13381787. The next prime is 13381807. The reversal of 13381797 is 79718331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13381787) and next prime (13381807).

It is not a de Polignac number, because 13381797 - 2¹¹ = 13379749 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13381717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15168 + ... + 16025.

It is an arithmetic number, because the mean of its divisors is an integer number (1310148).

Almost surely, 2^13381797 is an apocalyptic number.

It is an amenable number.

13381797 is a deficient number, since it is larger than the sum of its proper divisors (7580571).

13381797 is a wasteful number, since it uses less digits than its factorization.

13381797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31220.

The product of its digits is 31752, while the sum is 39.

The square root of 13381797 is about 3658.1138582608. The cubic root of 13381797 is about 237.4131730625.

The spelling of 13381797 in words is "thirteen million, three hundred eighty-one thousand, seven hundred ninety-seven".