20331022312 has 16 divisors (see below), whose sum is σ = 38124676800. Its totient is φ = 10164441840.

The previous prime is 20331022307. The next prime is 20331022331. The reversal of 20331022312 is 21322013302.

It is a self number, because there is not a number n which added to its sum of digits gives 20331022312.

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, 49762 + ... + 207697.

It is an arithmetic number, because the mean of its divisors is an integer number (2382792300).

Almost surely, 2^20331022312 is an apocalyptic number.

It is an amenable number.

20331022312 is a deficient number, since it is larger than the sum of its proper divisors (17793654488).

20331022312 is a wasteful number, since it uses less digits than its factorization.

20331022312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267336 (or 267332 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20331022312 its reverse (21322013302), we get a palindrome (41653035614).

The spelling of 20331022312 in words is "twenty billion, three hundred thirty-one million, twenty-two thousand, three hundred twelve".