13146321 has 24 divisors (see below), whose sum is σ = 19009440. Its totient is φ = 8077312.

The previous prime is 13146319. The next prime is 13146349. The reversal of 13146321 is 12364131.

It is not a de Polignac number, because 13146321 - 2¹ = 13146319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13146361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51025 + ... + 51281.

It is an arithmetic number, because the mean of its divisors is an integer number (792060).

Almost surely, 2^13146321 is an apocalyptic number.

It is an amenable number.

13146321 is a deficient number, since it is larger than the sum of its proper divisors (5863119).

13146321 is a wasteful number, since it uses less digits than its factorization.

13146321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 336 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 13146321 is about 3625.7855700524. The cubic root of 13146321 is about 236.0123581099.

The spelling of 13146321 in words is "thirteen million, one hundred forty-six thousand, three hundred twenty-one".