20424333234431 has 8 divisors (see below), whose sum is σ = 23348613471264. Its totient is φ = 17501682584160.

The previous prime is 20424333234377. The next prime is 20424333234493. The reversal of 20424333234431 is 13443233342402.

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

It is a cyclic number.

It is not a de Polignac number, because 20424333234431 - 2²² = 20424329040127 is a prime.

It is a super-2 number, since 2×20424333234431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424333434431) 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, 407369780 + ... + 407419913.

It is an arithmetic number, because the mean of its divisors is an integer number (2918576683908).

Almost surely, 2^{20424333234431} is an apocalyptic number.

20424333234431 is a deficient number, since it is larger than the sum of its proper divisors (2924280236833).

20424333234431 is an equidigital number, since it uses as much as digits as its factorization.

20424333234431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814793281.

The product of its (nonzero) digits is 497664, while the sum is 38.

Adding to 20424333234431 its reverse (13443233342402), we get a palindrome (33867566576833).

The spelling of 20424333234431 in words is "twenty trillion, four hundred twenty-four billion, three hundred thirty-three million, two hundred thirty-four thousand, four hundred thirty-one".