21322031313 has 8 divisors (see below), whose sum is σ = 31013863776. Its totient is φ = 12922443200.

The previous prime is 21322031309. The next prime is 21322031407. The reversal of 21322031313 is 31313022312.

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 21322031313 - 2² = 21322031309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21322031313.

It is not an unprimeable number, because it can be changed into a prime (21322031413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323061048 + ... + 323061113.

It is an arithmetic number, because the mean of its divisors is an integer number (3876732972).

Almost surely, 2^21322031313 is an apocalyptic number.

It is an amenable number.

21322031313 is a deficient number, since it is larger than the sum of its proper divisors (9691832463).

21322031313 is a wasteful number, since it uses less digits than its factorization.

21322031313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646122175.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21322031313 its reverse (31313022312), we get a palindrome (52635053625).

Subtracting 21322031313 from its reverse (31313022312), we obtain a palindrome (9990990999).

The spelling of 21322031313 in words is "twenty-one billion, three hundred twenty-two million, thirty-one thousand, three hundred thirteen".