100043320 has 32 divisors (see below), whose sum is σ = 242413920. Its totient is φ = 36938880.

The previous prime is 100043311. The next prime is 100043347. The reversal of 100043320 is 23340001.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 100043320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95676 + ... + 96715.

It is an arithmetic number, because the mean of its divisors is an integer number (7575435).

Almost surely, 2^100043320 is an apocalyptic number.

100043320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100043320 is an abundant number, since it is smaller than the sum of its proper divisors (142370600).

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

100043320 is a wasteful number, since it uses less digits than its factorization.

100043320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192415 (or 192411 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 100043320 is about 10002.1657654730. The cubic root of 100043320 is about 464.2258982280.

Adding to 100043320 its reverse (23340001), we get a palindrome (123383321).

The spelling of 100043320 in words is "one hundred million, forty-three thousand, three hundred twenty".