21303134342 has 32 divisors (see below), whose sum is σ = 37876537344. Its totient is φ = 8793489600.

The previous prime is 21303134323. The next prime is 21303134351. The reversal of 21303134342 is 24343130312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24743 + ... + 207890.

It is an arithmetic number, because the mean of its divisors is an integer number (1183641792).

Almost surely, 2^21303134342 is an apocalyptic number.

21303134342 is a deficient number, since it is larger than the sum of its proper divisors (16573403002).

21303134342 is a wasteful number, since it uses less digits than its factorization.

21303134342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232884.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21303134342 its reverse (24343130312), we get a palindrome (45646264654).

The spelling of 21303134342 in words is "twenty-one billion, three hundred three million, one hundred thirty-four thousand, three hundred forty-two".