20413344431 has 8 divisors (see below), whose sum is σ = 21489377280. Its totient is φ = 19337476248.

The previous prime is 20413344319. The next prime is 20413344433. The reversal of 20413344431 is 13444331402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20413344431 is a prime.

It is a super-2 number, since 2×20413344431² (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 = 20413344394 and 20413344403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413344433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276050 + ... + 342096.

It is an arithmetic number, because the mean of its divisors is an integer number (2686172160).

Almost surely, 2^20413344431 is an apocalyptic number.

20413344431 is a deficient number, since it is larger than the sum of its proper divisors (1076032849).

20413344431 is a wasteful number, since it uses less digits than its factorization.

20413344431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82333.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 20413344431 its reverse (13444331402), we get a palindrome (33857675833).

The spelling of 20413344431 in words is "twenty billion, four hundred thirteen million, three hundred forty-four thousand, four hundred thirty-one".