20303543100 has 36 divisors (see below), whose sum is σ = 58744918904. Its totient is φ = 5414278080.

The previous prime is 20303543087. The next prime is 20303543101. The reversal of 20303543100 is 134530302.

It is a super-2 number, since 2×20303543100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303543101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33838939 + ... + 33839538.

Almost surely, 2^20303543100 is an apocalyptic number.

20303543100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303543100 is an abundant number, since it is smaller than the sum of its proper divisors (38441375804).

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

20303543100 is a wasteful number, since it uses less digits than its factorization.

20303543100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67678494 (or 67678487 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The spelling of 20303543100 in words is "twenty billion, three hundred three million, five hundred forty-three thousand, one hundred".