243134461 has 4 divisors (see below), whose sum is σ = 244152000. Its totient is φ = 242116924.

The previous prime is 243134453. The next prime is 243134467. The reversal of 243134461 is 164431342.

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 a cyclic number.

It is not a de Polignac number, because 243134461 - 2³ = 243134453 is a prime.

It is a super-2 number, since 2×243134461² = 118228732251521042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243134467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508411 + ... + 508888.

It is an arithmetic number, because the mean of its divisors is an integer number (61038000).

Almost surely, 2^243134461 is an apocalyptic number.

It is an amenable number.

243134461 is a deficient number, since it is larger than the sum of its proper divisors (1017539).

243134461 is a wasteful number, since it uses less digits than its factorization.

243134461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017538.

The product of its digits is 6912, while the sum is 28.

The square root of 243134461 is about 15592.7695102570. The cubic root of 243134461 is about 624.1402245201.

The spelling of 243134461 in words is "two hundred forty-three million, one hundred thirty-four thousand, four hundred sixty-one".