243101400 has 96 divisors (see below), whose sum is σ = 761565840. Its totient is φ = 64143360.

The previous prime is 243101389. The next prime is 243101429. The reversal of 243101400 is 4101342.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 243101400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56112 + ... + 60288.

Almost surely, 2^243101400 is an apocalyptic number.

243101400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243101400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380782920).

243101400 is an abundant number, since it is smaller than the sum of its proper divisors (518464440).

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

243101400 is a wasteful number, since it uses less digits than its factorization.

243101400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293 (or 4284 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 243101400 is about 15591.7093354128. The cubic root of 243101400 is about 624.1119334047. Note that the first 3 decimals are identical.

Adding to 243101400 its reverse (4101342), we get a palindrome (247202742).

The spelling of 243101400 in words is "two hundred forty-three million, one hundred one thousand, four hundred".