20321002230 has 32 divisors (see below), whose sum is σ = 48774210048. Its totient is φ = 5418511200.

The previous prime is 20321002223. The next prime is 20321002237. The reversal of 20321002230 is 3220012302.

It is an interprime number because it is at equal distance from previous prime (20321002223) and next prime (20321002237).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321002237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640645 + ... + 671615.

It is an arithmetic number, because the mean of its divisors is an integer number (1524194064).

Almost surely, 2^20321002230 is an apocalyptic number.

20321002230 is an abundant number, since it is smaller than the sum of its proper divisors (28453207818).

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

20321002230 is a wasteful number, since it uses less digits than its factorization.

20321002230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52852.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20321002230 its reverse (3220012302), we get a palindrome (23541014532).

The spelling of 20321002230 in words is "twenty billion, three hundred twenty-one million, two thousand, two hundred thirty".