21311030322 has 24 divisors (see below), whose sum is σ = 46179454464. Its totient is φ = 7102822104.

The previous prime is 21311030311. The next prime is 21311030327. The reversal of 21311030322 is 22303011312.

21311030322 is a `hidden beast` number, since 2 + 1 + 311 + 0 + 30 + 322 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21311030295 and 21311030304.

It is not an unprimeable number, because it can be changed into a prime (21311030327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92743 + ... + 226325.

It is an arithmetic number, because the mean of its divisors is an integer number (1924143936).

Almost surely, 2^21311030322 is an apocalyptic number.

21311030322 is an abundant number, since it is smaller than the sum of its proper divisors (24868424142).

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

21311030322 is a wasteful number, since it uses less digits than its factorization.

21311030322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142454 (or 142451 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21311030322 its reverse (22303011312), we get a palindrome (43614041634).

The spelling of 21311030322 in words is "twenty-one billion, three hundred eleven million, thirty thousand, three hundred twenty-two".