21344131204 has 24 divisors (see below), whose sum is σ = 41263689600. Its totient is φ = 9579067680.

The previous prime is 21344131201. The next prime is 21344131273. The reversal of 21344131204 is 40213144312.

It is not an unprimeable number, because it can be changed into a prime (21344131201) 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, 3066739 + ... + 3073690.

It is an arithmetic number, because the mean of its divisors is an integer number (1719320400).

Almost surely, 2^21344131204 is an apocalyptic number.

It is an amenable number.

21344131204 is a deficient number, since it is larger than the sum of its proper divisors (19919558396).

21344131204 is a wasteful number, since it uses less digits than its factorization.

21344131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6140523 (or 6140521 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21344131204 its reverse (40213144312), we get a palindrome (61557275516).

The spelling of 21344131204 in words is "twenty-one billion, three hundred forty-four million, one hundred thirty-one thousand, two hundred four".