243091934 has 4 divisors (see below), whose sum is σ = 364637904. Its totient is φ = 121545966.

The previous prime is 243091921. The next prime is 243091939. The reversal of 243091934 is 439190342.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 243091894 and 243091903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243091939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60772982 + ... + 60772985.

It is an arithmetic number, because the mean of its divisors is an integer number (91159476).

Almost surely, 2^243091934 is an apocalyptic number.

243091934 is a deficient number, since it is larger than the sum of its proper divisors (121545970).

243091934 is a wasteful number, since it uses less digits than its factorization.

243091934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121545969.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 243091934 is about 15591.4057736947. The cubic root of 243091934 is about 624.1038326420.

The spelling of 243091934 in words is "two hundred forty-three million, ninety-one thousand, nine hundred thirty-four".