21343232134 has 48 divisors (see below), whose sum is σ = 38098745280. Its totient is φ = 8937277440.

The previous prime is 21343232093. The next prime is 21343232179. The reversal of 21343232134 is 43123234312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2948832 + ... + 2956060.

It is an arithmetic number, because the mean of its divisors is an integer number (793723860).

Almost surely, 2^21343232134 is an apocalyptic number.

21343232134 is a deficient number, since it is larger than the sum of its proper divisors (16755513146).

21343232134 is a wasteful number, since it uses less digits than its factorization.

21343232134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7933 (or 7926 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

Adding to 21343232134 its reverse (43123234312), we get a palindrome (64466466446).

The spelling of 21343232134 in words is "twenty-one billion, three hundred forty-three million, two hundred thirty-two thousand, one hundred thirty-four".