20045424331 has 8 divisors (see below), whose sum is σ = 20155156560. Its totient is φ = 19935773088.

The previous prime is 20045424317. The next prime is 20045424409. The reversal of 20045424331 is 13342454002.

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 not a de Polignac number, because 20045424331 - 2⁵ = 20045424299 is a prime.

It is a super-2 number, since 2×20045424331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20045424331.

It is not an unprimeable number, because it can be changed into a prime (20045464331) 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, 514485 + ... + 552073.

It is an arithmetic number, because the mean of its divisors is an integer number (2519394570).

Almost surely, 2^20045424331 is an apocalyptic number.

20045424331 is a deficient number, since it is larger than the sum of its proper divisors (109732229).

20045424331 is a wasteful number, since it uses less digits than its factorization.

20045424331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40493.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20045424331 its reverse (13342454002), we get a palindrome (33387878333).

It can be divided in two parts, 200454 and 24331, that added together give a triangular number (224785 = T₆₇₀).

The spelling of 20045424331 in words is "twenty billion, forty-five million, four hundred twenty-four thousand, three hundred thirty-one".