243307406 has 16 divisors (see below), whose sum is σ = 382915968. Its totient is φ = 115797600.

The previous prime is 243307397. The next prime is 243307423. The reversal of 243307406 is 604703342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28385 + ... + 35948.

It is an arithmetic number, because the mean of its divisors is an integer number (23932248).

Almost surely, 2^243307406 is an apocalyptic number.

243307406 is a deficient number, since it is larger than the sum of its proper divisors (139608562).

243307406 is a wasteful number, since it uses less digits than its factorization.

243307406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64427.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 243307406 is about 15598.3142037850. The cubic root of 243307406 is about 624.2881760518.

The spelling of 243307406 in words is "two hundred forty-three million, three hundred seven thousand, four hundred six".