20100331312 has 20 divisors (see below), whose sum is σ = 39016394656. Its totient is φ = 10031584320.

The previous prime is 20100331309. The next prime is 20100331313. The reversal of 20100331312 is 21313300102.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20100331313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152408 + ... + 1169719.

Almost surely, 2^20100331312 is an apocalyptic number.

It is an amenable number.

20100331312 is a deficient number, since it is larger than the sum of its proper divisors (18916063344).

20100331312 is a wasteful number, since it uses less digits than its factorization.

20100331312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322676 (or 2322670 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20100331312 its reverse (21313300102), we get a palindrome (41413631414).

The spelling of 20100331312 in words is "twenty billion, one hundred million, three hundred thirty-one thousand, three hundred twelve".