21423430301 has 16 divisors (see below), whose sum is σ = 26372441088. Its totient is φ = 16947100800.

The previous prime is 21423430291. The next prime is 21423430309. The reversal of 21423430301 is 10303432412.

It is a de Polignac number, because none of the positive numbers 2^k-21423430301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21423430309) 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 15 ways as a sum of consecutive naturals, for example, 515156 + ... + 555186.

It is an arithmetic number, because the mean of its divisors is an integer number (1648277568).

Almost surely, 2^21423430301 is an apocalyptic number.

It is an amenable number.

21423430301 is a deficient number, since it is larger than the sum of its proper divisors (4949010787).

21423430301 is a wasteful number, since it uses less digits than its factorization.

21423430301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45932.

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

Adding to 21423430301 its reverse (10303432412), we get a palindrome (31726862713).

The spelling of 21423430301 in words is "twenty-one billion, four hundred twenty-three million, four hundred thirty thousand, three hundred one".