243283157 has 8 divisors (see below), whose sum is σ = 262183320. Its totient is φ = 224409600.

The previous prime is 243283129. The next prime is 243283223. The reversal of 243283157 is 751382342.

It can be written as a sum of positive squares in 4 ways, for example, as 152004241 + 91278916 = 12329^2 + 9554^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243283157 - 2¹⁰ = 243282133 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 (243283127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14969 + ... + 26657.

It is an arithmetic number, because the mean of its divisors is an integer number (32772915).

Almost surely, 2^243283157 is an apocalyptic number.

It is an amenable number.

243283157 is a deficient number, since it is larger than the sum of its proper divisors (18900163).

243283157 is a wasteful number, since it uses less digits than its factorization.

243283157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13303.

The product of its digits is 40320, while the sum is 35.

The square root of 243283157 is about 15597.5368888809. The cubic root of 243283157 is about 624.2674356680.

The spelling of 243283157 in words is "two hundred forty-three million, two hundred eighty-three thousand, one hundred fifty-seven".