20313879 has 8 divisors (see below), whose sum is σ = 27265152. Its totient is φ = 13452600.

The previous prime is 20313871. The next prime is 20313913. The reversal of 20313879 is 97831302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20313879 - 2³ = 20313871 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21969 + ... + 22874.

It is an arithmetic number, because the mean of its divisors is an integer number (3408144).

Almost surely, 2^20313879 is an apocalyptic number.

20313879 is a deficient number, since it is larger than the sum of its proper divisors (6951273).

20313879 is a wasteful number, since it uses less digits than its factorization.

20313879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44997.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 20313879 is about 4507.0920780477. The cubic root of 20313879 is about 272.8543951108.

The spelling of 20313879 in words is "twenty million, three hundred thirteen thousand, eight hundred seventy-nine".