20314231651 has 24 divisors (see below), whose sum is σ = 25066712096. Its totient is φ = 16119198720.

The previous prime is 20314231643. The next prime is 20314231661. The reversal of 20314231651 is 15613241302.

It is not a de Polignac number, because 20314231651 - 2³ = 20314231643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20314231661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41095 + ... + 205711.

Almost surely, 2^20314231651 is an apocalyptic number.

20314231651 is a deficient number, since it is larger than the sum of its proper divisors (4752480445).

20314231651 is a wasteful number, since it uses less digits than its factorization.

20314231651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164719 (or 164702 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 20314231651 its reverse (15613241302), we get a palindrome (35927472953).

The spelling of 20314231651 in words is "twenty billion, three hundred fourteen million, two hundred thirty-one thousand, six hundred fifty-one".