20302444431 has 6 divisors (see below), whose sum is σ = 29325753080. Its totient is φ = 13534962948.

The previous prime is 20302444373. The next prime is 20302444451. The reversal of 20302444431 is 13444420302.

It is a happy number.

20302444431 is a `hidden beast` number, since 203 + 0 + 24 + 4 + 4 + 431 = 666.

It is not a de Polignac number, because 20302444431 - 2²¹ = 20300347279 is a prime.

It is a super-2 number, since 2×20302444431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20302444395 and 20302444404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302444451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1127913571 + ... + 1127913588.

Almost surely, 2^20302444431 is an apocalyptic number.

20302444431 is a deficient number, since it is larger than the sum of its proper divisors (9023308649).

20302444431 is a wasteful number, since it uses less digits than its factorization.

20302444431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255827165 (or 2255827162 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20302444431 its reverse (13444420302), we get a palindrome (33746864733).

The spelling of 20302444431 in words is "twenty billion, three hundred two million, four hundred forty-four thousand, four hundred thirty-one".