21403314023 has 12 divisors (see below), whose sum is σ = 26812943640. Its totient is φ = 16934489712.

The previous prime is 21403313963. The next prime is 21403314043. The reversal of 21403314023 is 32041330412.

It is not a de Polignac number, because 21403314023 - 2³² = 17108346727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21403314023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403314043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16799453 + ... + 16800726.

It is an arithmetic number, because the mean of its divisors is an integer number (2234411970).

Almost surely, 2^21403314023 is an apocalyptic number.

21403314023 is a deficient number, since it is larger than the sum of its proper divisors (5409629617).

21403314023 is a wasteful number, since it uses less digits than its factorization.

21403314023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33600206 (or 33600199 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21403314023 its reverse (32041330412), we get a palindrome (53444644435).

The spelling of 21403314023 in words is "twenty-one billion, four hundred three million, three hundred fourteen thousand, twenty-three".