21342341403 has 64 divisors (see below), whose sum is σ = 33972364800. Its totient is φ = 13216452480.

The previous prime is 21342341387. The next prime is 21342341429. The reversal of 21342341403 is 30414324312.

21342341403 is a `hidden beast` number, since 21 + 3 + 4 + 234 + 1 + 403 = 666.

It is not a de Polignac number, because 21342341403 - 2⁴ = 21342341387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21342541403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2251093 + ... + 2260553.

It is an arithmetic number, because the mean of its divisors is an integer number (530818200).

Almost surely, 2^21342341403 is an apocalyptic number.

21342341403 is a deficient number, since it is larger than the sum of its proper divisors (12630023397).

21342341403 is a wasteful number, since it uses less digits than its factorization.

21342341403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609 (or 9603 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21342341403 its reverse (30414324312), we get a palindrome (51756665715).

The spelling of 21342341403 in words is "twenty-one billion, three hundred forty-two million, three hundred forty-one thousand, four hundred three".