21032144323 has 8 divisors (see below), whose sum is σ = 21228760800. Its totient is φ = 20835712128.

The previous prime is 21032144317. The next prime is 21032144347. The reversal of 21032144323 is 32344123012.

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 21032144323 - 2⁵ = 21032144291 is a prime.

It is a super-2 number, since 2×21032144323² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21032144383) 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, 188818 + ... + 278776.

It is an arithmetic number, because the mean of its divisors is an integer number (2653595100).

Almost surely, 2^21032144323 is an apocalyptic number.

21032144323 is a deficient number, since it is larger than the sum of its proper divisors (196616477).

21032144323 is a wasteful number, since it uses less digits than its factorization.

21032144323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92141.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21032144323 its reverse (32344123012), we get a palindrome (53376267335).

The spelling of 21032144323 in words is "twenty-one billion, thirty-two million, one hundred forty-four thousand, three hundred twenty-three".