202320013 has 4 divisors (see below), whose sum is σ = 231222880. Its totient is φ = 173417148.

The previous prime is 202319989. The next prime is 202320073. The reversal of 202320013 is 310023202.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 202320013 - 2¹⁷ = 202188941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202319975 and 202320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202320073) 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, 14451423 + ... + 14451436.

It is an arithmetic number, because the mean of its divisors is an integer number (57805720).

Almost surely, 2^202320013 is an apocalyptic number.

It is an amenable number.

202320013 is a deficient number, since it is larger than the sum of its proper divisors (28902867).

202320013 is an equidigital number, since it uses as much as digits as its factorization.

202320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28902866.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 202320013 is about 14223.9239663322. The cubic root of 202320013 is about 587.0561130524.

Adding to 202320013 its reverse (310023202), we get a palindrome (512343215).

It can be divided in two parts, 20232001 and 3, that added together give a square (20232004 = 4498²).

The spelling of 202320013 in words is "two hundred two million, three hundred twenty thousand, thirteen".