13021293 has 4 divisors (see below), whose sum is σ = 17361728. Its totient is φ = 8680860.

The previous prime is 13021277. The next prime is 13021331. The reversal of 13021293 is 39212031.

It is a happy number.

13021293 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13021293 - 2⁴ = 13021277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2170213 + ... + 2170218.

It is an arithmetic number, because the mean of its divisors is an integer number (4340432).

Almost surely, 2^13021293 is an apocalyptic number.

It is an amenable number.

13021293 is a deficient number, since it is larger than the sum of its proper divisors (4340435).

13021293 is an equidigital number, since it uses as much as digits as its factorization.

13021293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4340434.

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

The square root of 13021293 is about 3608.5028751547. The cubic root of 13021293 is about 235.2617755902.

It can be divided in two parts, 130212 and 93, that added together give a triangular number (130305 = T₅₁₀).

The spelling of 13021293 in words is "thirteen million, twenty-one thousand, two hundred ninety-three".