13293021 has 8 divisors (see below), whose sum is σ = 20256064. Its totient is φ = 7596000.

The previous prime is 13293019. The next prime is 13293023. The reversal of 13293021 is 12039231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13293019) and next prime (13293023).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13293021 - 2¹ = 13293019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 633001 = 13293021 / (1 + 3 + 2 + 9 + 3 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13293023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316480 + ... + 316521.

It is an arithmetic number, because the mean of its divisors is an integer number (2532008).

Almost surely, 2^13293021 is an apocalyptic number.

It is an amenable number.

13293021 is a deficient number, since it is larger than the sum of its proper divisors (6963043).

13293021 is an equidigital number, since it uses as much as digits as its factorization.

13293021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633011.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13293021 is about 3645.9595444821. The cubic root of 13293021 is about 236.8870012693.

The spelling of 13293021 in words is "thirteen million, two hundred ninety-three thousand, twenty-one".