19924313 has 4 divisors (see below), whose sum is σ = 19939200. Its totient is φ = 19909428.

The previous prime is 19924291. The next prime is 19924327. The reversal of 19924313 is 31342991.

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 19924313 - 2⁶ = 19924249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19924313.

It is not an unprimeable number, because it can be changed into a prime (19924013) 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, 5213 + ... + 8186.

It is an arithmetic number, because the mean of its divisors is an integer number (4984800).

Almost surely, 2^19924313 is an apocalyptic number.

It is an amenable number.

19924313 is a deficient number, since it is larger than the sum of its proper divisors (14887).

19924313 is a wasteful number, since it uses less digits than its factorization.

19924313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14886.

The product of its digits is 5832, while the sum is 32.

The square root of 19924313 is about 4463.6658701117. The cubic root of 19924313 is about 271.0989186055.

The spelling of 19924313 in words is "nineteen million, nine hundred twenty-four thousand, three hundred thirteen".