21430124343 has 32 divisors (see below), whose sum is σ = 31916238080. Its totient is φ = 14211378720.

The previous prime is 21430124311. The next prime is 21430124369. The reversal of 21430124343 is 34342103412.

21430124343 is a `hidden beast` number, since 2 + 14 + 301 + 2 + 4 + 343 = 666.

It is not a de Polignac number, because 21430124343 - 2⁵ = 21430124311 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21430124383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5048580 + ... + 5052822.

It is an arithmetic number, because the mean of its divisors is an integer number (997382440).

Almost surely, 2^21430124343 is an apocalyptic number.

21430124343 is a deficient number, since it is larger than the sum of its proper divisors (10486113737).

21430124343 is a wasteful number, since it uses less digits than its factorization.

21430124343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5196 (or 5190 counting only the distinct ones).

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

Adding to 21430124343 its reverse (34342103412), we get a palindrome (55772227755).

The spelling of 21430124343 in words is "twenty-one billion, four hundred thirty million, one hundred twenty-four thousand, three hundred forty-three".