20301231234 has 32 divisors (see below), whose sum is σ = 41329658304. Its totient is φ = 6646648320.

The previous prime is 20301231193. The next prime is 20301231239. The reversal of 20301231234 is 43213210302.

It is a self number, because there is not a number n which added to its sum of digits gives 20301231234.

It is not an unprimeable number, because it can be changed into a prime (20301231239) 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 15 ways as a sum of consecutive naturals, for example, 9397 + ... + 201719.

It is an arithmetic number, because the mean of its divisors is an integer number (1291551822).

Almost surely, 2^20301231234 is an apocalyptic number.

20301231234 is an abundant number, since it is smaller than the sum of its proper divisors (21028427070).

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

20301231234 is a wasteful number, since it uses less digits than its factorization.

20301231234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192642.

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

Adding to 20301231234 its reverse (43213210302), we get a palindrome (63514441536).

The spelling of 20301231234 in words is "twenty billion, three hundred one million, two hundred thirty-one thousand, two hundred thirty-four".