20431114145 has 32 divisors (see below), whose sum is σ = 26666049312. Its totient is φ = 14938140672.

The previous prime is 20431114139. The next prime is 20431114147. The reversal of 20431114145 is 54141113402.

It can be written as a sum of positive squares in 16 ways, for example, as 8521320721 + 11909793424 = 92311^2 + 109132^2 .

It is not a de Polignac number, because 20431114145 - 2¹⁴ = 20431097761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20431114147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2986649 + ... + 2993481.

It is an arithmetic number, because the mean of its divisors is an integer number (833314041).

Almost surely, 2^20431114145 is an apocalyptic number.

It is an amenable number.

20431114145 is a deficient number, since it is larger than the sum of its proper divisors (6234935167).

20431114145 is a wasteful number, since it uses less digits than its factorization.

20431114145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7301.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 20431114145 its reverse (54141113402), we get a palindrome (74572227547).

The spelling of 20431114145 in words is "twenty billion, four hundred thirty-one million, one hundred fourteen thousand, one hundred forty-five".