20321311230 has 96 divisors (see below), whose sum is σ = 59626251360. Its totient is φ = 4756496640.

The previous prime is 20321311207. The next prime is 20321311249. The reversal of 20321311230 is 3211312302.

20321311230 is a `hidden beast` number, since 2 + 0 + 321 + 311 + 2 + 30 = 666.

It is a super-2 number, since 2×20321311230² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 325197 + ... + 382616.

It is an arithmetic number, because the mean of its divisors is an integer number (621106785).

Almost surely, 2^20321311230 is an apocalyptic number.

20321311230 is an abundant number, since it is smaller than the sum of its proper divisors (39304940130).

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

20321311230 is a wasteful number, since it uses less digits than its factorization.

20321311230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707866 (or 707863 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20321311230 its reverse (3211312302), we get a palindrome (23532623532).

The spelling of 20321311230 in words is "twenty billion, three hundred twenty-one million, three hundred eleven thousand, two hundred thirty".