20312302134 has 16 divisors (see below), whose sum is σ = 43014287088. Its totient is φ = 6372486912.

The previous prime is 20312302111. The next prime is 20312302139. The reversal of 20312302134 is 43120321302.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20312302134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312302139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99570007 + ... + 99570210.

It is an arithmetic number, because the mean of its divisors is an integer number (2688392943).

Almost surely, 2^20312302134 is an apocalyptic number.

20312302134 is an abundant number, since it is smaller than the sum of its proper divisors (22701984954).

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

20312302134 is a wasteful number, since it uses less digits than its factorization.

20312302134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199140239.

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

Adding to 20312302134 its reverse (43120321302), we get a palindrome (63432623436).

The spelling of 20312302134 in words is "twenty billion, three hundred twelve million, three hundred two thousand, one hundred thirty-four".