21983151323 has 4 divisors (see below), whose sum is σ = 25123601520. Its totient is φ = 18842701128.

The previous prime is 21983151319. The next prime is 21983151331. The reversal of 21983151323 is 32315138912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21983151323 - 2² = 21983151319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21983151353) 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 3 ways as a sum of consecutive naturals, for example, 1570225088 + ... + 1570225101.

It is an arithmetic number, because the mean of its divisors is an integer number (6280900380).

Almost surely, 2^21983151323 is an apocalyptic number.

21983151323 is a deficient number, since it is larger than the sum of its proper divisors (3140450197).

21983151323 is an equidigital number, since it uses as much as digits as its factorization.

21983151323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140450196.

The product of its digits is 38880, while the sum is 38.

The spelling of 21983151323 in words is "twenty-one billion, nine hundred eighty-three million, one hundred fifty-one thousand, three hundred twenty-three".