20316234 has 16 divisors (see below), whose sum is σ = 40680000. Its totient is φ = 6764160.

The previous prime is 20316229. The next prime is 20316239. The reversal of 20316234 is 43261302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20316229) and next prime (20316239).

It is a self number, because there is not a number n which added to its sum of digits gives 20316234.

It is not an unprimeable number, because it can be changed into a prime (20316239) 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, 6139 + ... + 8849.

It is an arithmetic number, because the mean of its divisors is an integer number (2542500).

Almost surely, 2^20316234 is an apocalyptic number.

20316234 is an abundant number, since it is smaller than the sum of its proper divisors (20363766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20316234 is a wasteful number, since it uses less digits than its factorization.

20316234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20316234 is about 4507.3533254006. The cubic root of 20316234 is about 272.8649387605.

Adding to 20316234 its reverse (43261302), we get a palindrome (63577536).

The spelling of 20316234 in words is "twenty million, three hundred sixteen thousand, two hundred thirty-four".