243113787 has 48 divisors (see below), whose sum is σ = 434903040. Its totient is φ = 127685376.

The previous prime is 243113779. The next prime is 243113813. The reversal of 243113787 is 787311342.

It is not a de Polignac number, because 243113787 - 2³ = 243113779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243113747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43414 + ... + 48692.

It is an arithmetic number, because the mean of its divisors is an integer number (9060480).

Almost surely, 2^243113787 is an apocalyptic number.

243113787 is a deficient number, since it is larger than the sum of its proper divisors (191789253).

243113787 is a wasteful number, since it uses less digits than its factorization.

243113787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352 (or 5349 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 243113787 is about 15592.1065606928. The cubic root of 243113787 is about 624.1225335674.

The spelling of 243113787 in words is "two hundred forty-three million, one hundred thirteen thousand, seven hundred eighty-seven".