21423130030 has 16 divisors (see below), whose sum is σ = 38648688624. Its totient is φ = 8549906560.

The previous prime is 21423129997. The next prime is 21423130039. The reversal of 21423130030 is 3003132412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21423130039) 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, 2413531 + ... + 2422390.

It is an arithmetic number, because the mean of its divisors is an integer number (2415543039).

Almost surely, 2^21423130030 is an apocalyptic number.

21423130030 is a deficient number, since it is larger than the sum of its proper divisors (17225558594).

21423130030 is a wasteful number, since it uses less digits than its factorization.

21423130030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836371.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21423130030 its reverse (3003132412), we get a palindrome (24426262442).

The spelling of 21423130030 in words is "twenty-one billion, four hundred twenty-three million, one hundred thirty thousand, thirty".