20431151212 has 24 divisors (see below), whose sum is σ = 38653534640. Its totient is φ = 9416347200.

The previous prime is 20431151179. The next prime is 20431151243. The reversal of 20431151212 is 21215113402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3630039 + ... + 3635662.

Almost surely, 2^20431151212 is an apocalyptic number.

It is an amenable number.

20431151212 is a deficient number, since it is larger than the sum of its proper divisors (18222383428).

20431151212 is a wasteful number, since it uses less digits than its factorization.

20431151212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7265761 (or 7265759 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 20431151212 its reverse (21215113402), we get a palindrome (41646264614).

The spelling of 20431151212 in words is "twenty billion, four hundred thirty-one million, one hundred fifty-one thousand, two hundred twelve".