20334304431 has 24 divisors (see below), whose sum is σ = 35334465920. Its totient is φ = 11008043856.

The previous prime is 20334304429. The next prime is 20334304481. The reversal of 20334304431 is 13440343302.

20334304431 is a `hidden beast` number, since 20 + 334 + 304 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 20334304431 - 2¹ = 20334304429 is a prime.

It is a super-2 number, since 2×20334304431² (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 = 20334304395 and 20334304404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20334304481) 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, 8492665 + ... + 8495058.

Almost surely, 2^20334304431 is an apocalyptic number.

20334304431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20334304431 is a deficient number, since it is larger than the sum of its proper divisors (15000161489).

20334304431 is a wasteful number, since it uses less digits than its factorization.

20334304431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16987755 (or 16987752 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 20334304431 its reverse (13440343302), we get a palindrome (33774647733).

The spelling of 20334304431 in words is "twenty billion, three hundred thirty-four million, three hundred four thousand, four hundred thirty-one".