20431202312 has 64 divisors (see below), whose sum is σ = 40837063680. Its totient is φ = 9562729792.

The previous prime is 20431202273. The next prime is 20431202321. The reversal of 20431202312 is 21320213402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1627853 + ... + 1640355.

It is an arithmetic number, because the mean of its divisors is an integer number (638079120).

Almost surely, 2^20431202312 is an apocalyptic number.

It is an amenable number.

20431202312 is a deficient number, since it is larger than the sum of its proper divisors (20405861368).

20431202312 is a wasteful number, since it uses less digits than its factorization.

20431202312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12722 (or 12718 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20431202312 its reverse (21320213402), we get a palindrome (41751415714).

The spelling of 20431202312 in words is "twenty billion, four hundred thirty-one million, two hundred two thousand, three hundred twelve".