20315220232 has 16 divisors (see below), whose sum is σ = 38097003600. Its totient is φ = 10156019280.

The previous prime is 20315220221. The next prime is 20315220251. The reversal of 20315220232 is 23202251302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143682 + ... + 247537.

It is an arithmetic number, because the mean of its divisors is an integer number (2381062725).

Almost surely, 2^20315220232 is an apocalyptic number.

It is an amenable number.

20315220232 is a deficient number, since it is larger than the sum of its proper divisors (17781783368).

20315220232 is a wasteful number, since it uses less digits than its factorization.

20315220232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397716 (or 397712 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20315220232 its reverse (23202251302), we get a palindrome (43517471534).

The spelling of 20315220232 in words is "twenty billion, three hundred fifteen million, two hundred twenty thousand, two hundred thirty-two".