21343134300 has 36 divisors (see below), whose sum is σ = 61752802776. Its totient is φ = 5691502400.

The previous prime is 21343134277. The next prime is 21343134317. The reversal of 21343134300 is 343134312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35571591 + ... + 35572190.

Almost surely, 2^21343134300 is an apocalyptic number.

21343134300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21343134300 is an abundant number, since it is smaller than the sum of its proper divisors (40409668476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21343134300 is a wasteful number, since it uses less digits than its factorization.

21343134300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71143798 (or 71143791 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21343134300 its reverse (343134312), we get a palindrome (21686268612).

The spelling of 21343134300 in words is "twenty-one billion, three hundred forty-three million, one hundred thirty-four thousand, three hundred".