244021013 has 4 divisors (see below), whose sum is σ = 244062720. Its totient is φ = 243979308.

The previous prime is 244020989. The next prime is 244021049. The reversal of 244021013 is 310120442.

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 244021013 - 2²² = 239826709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 244020982 and 244021000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244020013) 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, 10295 + ... + 24372.

It is an arithmetic number, because the mean of its divisors is an integer number (61015680).

Almost surely, 2^244021013 is an apocalyptic number.

It is an amenable number.

244021013 is a deficient number, since it is larger than the sum of its proper divisors (41707).

244021013 is an equidigital number, since it uses as much as digits as its factorization.

244021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41706.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 244021013 is about 15621.1719470723. The cubic root of 244021013 is about 624.8979144199.

Adding to 244021013 its reverse (310120442), we get a palindrome (554141455).

The spelling of 244021013 in words is "two hundred forty-four million, twenty-one thousand, thirteen".