243348231 has 16 divisors (see below), whose sum is σ = 371049984. Its totient is φ = 138968544.

The previous prime is 243348197. The next prime is 243348241. The reversal of 243348231 is 132843342.

It is not a de Polignac number, because 243348231 - 2⁶ = 243348167 is a prime.

It is a super-2 number, since 2×243348231² = 118436723061658722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243348241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46510 + ... + 51476.

It is an arithmetic number, because the mean of its divisors is an integer number (23190624).

Almost surely, 2^243348231 is an apocalyptic number.

243348231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

243348231 is a deficient number, since it is larger than the sum of its proper divisors (127701753).

243348231 is a wasteful number, since it uses less digits than its factorization.

243348231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7310.

The product of its digits is 13824, while the sum is 30.

The square root of 243348231 is about 15599.6227839009. The cubic root of 243348231 is about 624.3230909219.

The spelling of 243348231 in words is "two hundred forty-three million, three hundred forty-eight thousand, two hundred thirty-one".