20313773 has 4 divisors (see below), whose sum is σ = 20969088. Its totient is φ = 19658460.

The previous prime is 20313767. The next prime is 20313779. The reversal of 20313773 is 37731302.

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 an interprime number because it is at equal distance from previous prime (20313767) and next prime (20313779).

It is a cyclic number.

It is not a de Polignac number, because 20313773 - 2⁴ = 20313757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313779) 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, 327611 + ... + 327672.

It is an arithmetic number, because the mean of its divisors is an integer number (5242272).

Almost surely, 2^20313773 is an apocalyptic number.

It is an amenable number.

20313773 is a deficient number, since it is larger than the sum of its proper divisors (655315).

20313773 is an equidigital number, since it uses as much as digits as its factorization.

20313773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655314.

The product of its (nonzero) digits is 2646, while the sum is 26.

The square root of 20313773 is about 4507.0803187873. The cubic root of 20313773 is about 272.8539205155.

The spelling of 20313773 in words is "twenty million, three hundred thirteen thousand, seven hundred seventy-three".