21343301342 has 32 divisors (see below), whose sum is σ = 35301671424. Its totient is φ = 9597240000.

The previous prime is 21343301327. The next prime is 21343301359. The reversal of 21343301342 is 24310334312.

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, 1761818 + ... + 1773890.

It is an arithmetic number, because the mean of its divisors is an integer number (1103177232).

Almost surely, 2^21343301342 is an apocalyptic number.

21343301342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21343301342 is a deficient number, since it is larger than the sum of its proper divisors (13958370082).

21343301342 is a wasteful number, since it uses less digits than its factorization.

21343301342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12944.

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

Adding to 21343301342 its reverse (24310334312), we get a palindrome (45653635654).

The spelling of 21343301342 in words is "twenty-one billion, three hundred forty-three million, three hundred one thousand, three hundred forty-two".