20312223230 has 48 divisors (see below), whose sum is σ = 40262034960. Its totient is φ = 7372744704.

The previous prime is 20312223199. The next prime is 20312223241. The reversal of 20312223230 is 3232221302.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2147 + ... + 201566.

It is an arithmetic number, because the mean of its divisors is an integer number (838792395).

Almost surely, 2^20312223230 is an apocalyptic number.

20312223230 is a deficient number, since it is larger than the sum of its proper divisors (19949811730).

20312223230 is a wasteful number, since it uses less digits than its factorization.

20312223230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203805 (or 203792 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20312223230 its reverse (3232221302), we get a palindrome (23544444532).

The spelling of 20312223230 in words is "twenty billion, three hundred twelve million, two hundred twenty-three thousand, two hundred thirty".