21431203322 has 8 divisors (see below), whose sum is σ = 32673801972. Its totient is φ = 10539936000.

The previous prime is 21431203267. The next prime is 21431203333. The reversal of 21431203322 is 22330213412.

It can be written as a sum of positive squares in 2 ways, for example, as 21344917801 + 86285521 = 146099^2 + 9289^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87832679 + ... + 87832922.

Almost surely, 2^21431203322 is an apocalyptic number.

21431203322 is a deficient number, since it is larger than the sum of its proper divisors (11242598650).

21431203322 is a wasteful number, since it uses less digits than its factorization.

21431203322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175665664.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21431203322 its reverse (22330213412), we get a palindrome (43761416734).

The spelling of 21431203322 in words is "twenty-one billion, four hundred thirty-one million, two hundred three thousand, three hundred twenty-two".