20434431141 has 8 divisors (see below), whose sum is σ = 30273231360. Its totient is φ = 13622954076.

The previous prime is 20434431131. The next prime is 20434431181. The reversal of 20434431141 is 14113443402.

20434431141 is a `hidden beast` number, since 2 + 0 + 4 + 344 + 311 + 4 + 1 = 666.

It is not a de Polignac number, because 20434431141 - 2⁵ = 20434431109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 756830783 = 20434431141 / (2 + 0 + 4 + 3 + 4 + 4 + 3 + 1 + 1 + 4 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434431131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378415365 + ... + 378415418.

It is an arithmetic number, because the mean of its divisors is an integer number (3784153920).

Almost surely, 2^20434431141 is an apocalyptic number.

It is an amenable number.

20434431141 is a deficient number, since it is larger than the sum of its proper divisors (9838800219).

20434431141 is an equidigital number, since it uses as much as digits as its factorization.

20434431141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756830792 (or 756830786 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 20434431141 its reverse (14113443402), we get a palindrome (34547874543).

The spelling of 20434431141 in words is "twenty billion, four hundred thirty-four million, four hundred thirty-one thousand, one hundred forty-one".