253321013 has 4 divisors (see below), whose sum is σ = 276350208. Its totient is φ = 230291820.

The previous prime is 253320953. The next prime is 253321039. The reversal of 253321013 is 310123352.

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 253321013 - 2²⁰ = 252272437 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 (253321093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11514581 + ... + 11514602.

It is an arithmetic number, because the mean of its divisors is an integer number (69087552).

Almost surely, 2^253321013 is an apocalyptic number.

It is an amenable number.

253321013 is a deficient number, since it is larger than the sum of its proper divisors (23029195).

253321013 is a wasteful number, since it uses less digits than its factorization.

253321013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23029194.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 253321013 is about 15916.0614788961. The cubic root of 253321013 is about 632.7377395801.

Adding to 253321013 its reverse (310123352), we get a palindrome (563444365).

The spelling of 253321013 in words is "two hundred fifty-three million, three hundred twenty-one thousand, thirteen".