23021331444 has 36 divisors (see below), whose sum is σ = 58289691460. Its totient is φ = 7661001600.

The previous prime is 23021331433. The next prime is 23021331467. The reversal of 23021331444 is 44413312032.

23021331444 is a `hidden beast` number, since 2 + 3 + 0 + 213 + 3 + 1 + 444 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18752015844 + 4269315600 = 136938^2 + 65340^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 510379 + ... + 553650.

Almost surely, 2^23021331444 is an apocalyptic number.

It is an amenable number.

23021331444 is an abundant number, since it is smaller than the sum of its proper divisors (35268360016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23021331444 is a wasteful number, since it uses less digits than its factorization.

23021331444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064640 (or 1064635 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 23021331444 its reverse (44413312032), we get a palindrome (67434643476).

The spelling of 23021331444 in words is "twenty-three billion, twenty-one million, three hundred thirty-one thousand, four hundred forty-four".