21343124230 has 32 divisors (see below), whose sum is σ = 38645571744. Its totient is φ = 8486739456.

The previous prime is 21343124227. The next prime is 21343124239. The reversal of 21343124230 is 3242134312.

It is a junction number, because it is equal to n+sod(n) for n = 21343124195 and 21343124204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343124239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1218414 + ... + 1235806.

It is an arithmetic number, because the mean of its divisors is an integer number (1207674117).

Almost surely, 2^21343124230 is an apocalyptic number.

21343124230 is a deficient number, since it is larger than the sum of its proper divisors (17302447514).

21343124230 is a wasteful number, since it uses less digits than its factorization.

21343124230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18120.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21343124230 its reverse (3242134312), we get a palindrome (24585258542).

The spelling of 21343124230 in words is "twenty-one billion, three hundred forty-three million, one hundred twenty-four thousand, two hundred thirty".