20044040331 has 16 divisors (see below), whose sum is σ = 30763040000. Its totient is φ = 11371334688.

The previous prime is 20044040311. The next prime is 20044040363. The reversal of 20044040331 is 13304044002.

It is not a de Polignac number, because 20044040331 - 2¹⁵ = 20044007563 is a prime.

It is a super-2 number, since 2×20044040331² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20044040298 and 20044040307.

It is not an unprimeable number, because it can be changed into a prime (20044040311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3430456 + ... + 3436293.

It is an arithmetic number, because the mean of its divisors is an integer number (1922690000).

Almost surely, 2^20044040331 is an apocalyptic number.

20044040331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20044040331 is a deficient number, since it is larger than the sum of its proper divisors (10718999669).

20044040331 is a wasteful number, since it uses less digits than its factorization.

20044040331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6866898.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20044040331 its reverse (13304044002), we get a palindrome (33348084333).

The spelling of 20044040331 in words is "twenty billion, forty-four million, forty thousand, three hundred thirty-one".