20343040100 has 36 divisors (see below), whose sum is σ = 45568416768. Its totient is φ = 7874724000.

The previous prime is 20343040093. The next prime is 20343040163. The reversal of 20343040100 is 104034302.

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, 3278036 + ... + 3284235.

Almost surely, 2^20343040100 is an apocalyptic number.

20343040100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20343040100 is an abundant number, since it is smaller than the sum of its proper divisors (25225376668).

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

20343040100 is a wasteful number, since it uses less digits than its factorization.

20343040100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6562316 (or 6562309 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20343040100 its reverse (104034302), we get a palindrome (20447074402).

The spelling of 20343040100 in words is "twenty billion, three hundred forty-three million, forty thousand, one hundred".