243100461 has 4 divisors (see below), whose sum is σ = 324133952. Its totient is φ = 162066972.

The previous prime is 243100427. The next prime is 243100511. The reversal of 243100461 is 164001342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 243100461 - 2¹¹ = 243098413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243100661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40516741 + ... + 40516746.

It is an arithmetic number, because the mean of its divisors is an integer number (81033488).

Almost surely, 2^243100461 is an apocalyptic number.

It is an amenable number.

243100461 is a deficient number, since it is larger than the sum of its proper divisors (81033491).

243100461 is an equidigital number, since it uses as much as digits as its factorization.

243100461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81033490.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 243100461 is about 15591.6792232267. The cubic root of 243100461 is about 624.1111298417. Note that the first 4 decimals are identical.

The spelling of 243100461 in words is "two hundred forty-three million, one hundred thousand, four hundred sixty-one".