243348975 has 48 divisors (see below), whose sum is σ = 448756000. Its totient is φ = 129288960.

The previous prime is 243348971. The next prime is 243348991. The reversal of 243348975 is 579843342.

It is not a de Polignac number, because 243348975 - 2² = 243348971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 243348975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243348971) 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, 235059 + ... + 236091.

Almost surely, 2^243348975 is an apocalyptic number.

243348975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

243348975 is a deficient number, since it is larger than the sum of its proper divisors (205407025).

243348975 is a wasteful number, since it uses less digits than its factorization.

243348975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1390 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 243348975 is about 15599.6466306131. The cubic root of 243348975 is about 624.3237271787.

The spelling of 243348975 in words is "two hundred forty-three million, three hundred forty-eight thousand, nine hundred seventy-five".