21140341323 has 8 divisors (see below), whose sum is σ = 29159091600. Its totient is φ = 13607575968.

The previous prime is 21140341319. The next prime is 21140341333. The reversal of 21140341323 is 32314304112.

It is a happy number.

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

It is not a de Polignac number, because 21140341323 - 2² = 21140341319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21140341293 and 21140341302.

It is not an unprimeable number, because it can be changed into a prime (21140341333) 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, 121496128 + ... + 121496301.

It is an arithmetic number, because the mean of its divisors is an integer number (3644886450).

Almost surely, 2^21140341323 is an apocalyptic number.

21140341323 is a deficient number, since it is larger than the sum of its proper divisors (8018750277).

21140341323 is a wasteful number, since it uses less digits than its factorization.

21140341323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242992461.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21140341323 its reverse (32314304112), we get a palindrome (53454645435).

The spelling of 21140341323 in words is "twenty-one billion, one hundred forty million, three hundred forty-one thousand, three hundred twenty-three".