43423012100 has 108 divisors (see below), whose sum is σ = 102570177276. Its totient is φ = 15948840960.

The previous prime is 43423012097. The next prime is 43423012103. The reversal of 43423012100 is 121032434.

It is an interprime number because it is at equal distance from previous prime (43423012097) and next prime (43423012103).

It can be written as a sum of positive squares in 18 ways, for example, as 43343908864 + 79103236 = 208192^2 + 8894^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (43423012103) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3255044 + ... + 3268356.

Almost surely, 2^43423012100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43423012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51285088638).

43423012100 is an abundant number, since it is smaller than the sum of its proper divisors (59147165176).

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

43423012100 is a wasteful number, since it uses less digits than its factorization.

43423012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13546 (or 13526 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 43423012100 its reverse (121032434), we get a palindrome (43544044534).

The spelling of 43423012100 in words is "forty-three billion, four hundred twenty-three million, twelve thousand, one hundred".