243157345 has 16 divisors (see below), whose sum is σ = 310608000. Its totient is φ = 182210688.

The previous prime is 243157337. The next prime is 243157351. The reversal of 243157345 is 543751342.

It is a cyclic number.

It is not a de Polignac number, because 243157345 - 2³ = 243157337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243157345.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5925 + ... + 22834.

It is an arithmetic number, because the mean of its divisors is an integer number (19413000).

Almost surely, 2^243157345 is an apocalyptic number.

It is an amenable number.

243157345 is a deficient number, since it is larger than the sum of its proper divisors (67450655).

243157345 is a wasteful number, since it uses less digits than its factorization.

243157345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28872.

The product of its digits is 50400, while the sum is 34.

The square root of 243157345 is about 15593.5032946417. The cubic root of 243157345 is about 624.1598054230.

The spelling of 243157345 in words is "two hundred forty-three million, one hundred fifty-seven thousand, three hundred forty-five".