20312079 has 8 divisors (see below), whose sum is σ = 27221040. Its totient is φ = 13472256.

The previous prime is 20312077. The next prime is 20312111. The reversal of 20312079 is 97021302.

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

It is not a de Polignac number, because 20312079 - 2¹ = 20312077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16594 + ... + 17775.

It is an arithmetic number, because the mean of its divisors is an integer number (3402630).

Almost surely, 2^20312079 is an apocalyptic number.

20312079 is a deficient number, since it is larger than the sum of its proper divisors (6908961).

20312079 is a wasteful number, since it uses less digits than its factorization.

20312079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34569.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20312079 is about 4506.8923883315. The cubic root of 20312079 is about 272.8463357209.

The spelling of 20312079 in words is "twenty million, three hundred twelve thousand, seventy-nine".