20345410431 has 24 divisors (see below), whose sum is σ = 30027638784. Its totient is φ = 13268584080.

The previous prime is 20345410427. The next prime is 20345410451. The reversal of 20345410431 is 13401454302.

It is a happy number.

20345410431 is a `hidden beast` number, since 203 + 4 + 5 + 410 + 43 + 1 = 666.

It is not a de Polignac number, because 20345410431 - 2² = 20345410427 is a prime.

It is a super-2 number, since 2×20345410431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20345410395 and 20345410404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345410451) 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, 956886 + ... + 977916.

It is an arithmetic number, because the mean of its divisors is an integer number (1251151616).

Almost surely, 2^20345410431 is an apocalyptic number.

20345410431 is a deficient number, since it is larger than the sum of its proper divisors (9682228353).

20345410431 is a wasteful number, since it uses less digits than its factorization.

20345410431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23371 (or 23368 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20345410431 its reverse (13401454302), we get a palindrome (33746864733).

The spelling of 20345410431 in words is "twenty billion, three hundred forty-five million, four hundred ten thousand, four hundred thirty-one".