231270243 has 4 divisors (see below), whose sum is σ = 308360328. Its totient is φ = 154180160.

The previous prime is 231270191. The next prime is 231270251. The reversal of 231270243 is 342072132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231270243 - 2¹⁰ = 231269219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231270283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38545038 + ... + 38545043.

It is an arithmetic number, because the mean of its divisors is an integer number (77090082).

Almost surely, 2^231270243 is an apocalyptic number.

231270243 is a deficient number, since it is larger than the sum of its proper divisors (77090085).

231270243 is an equidigital number, since it uses as much as digits as its factorization.

231270243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77090084.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 231270243 is about 15207.5718969203. The cubic root of 231270243 is about 613.8184227195.

The spelling of 231270243 in words is "two hundred thirty-one million, two hundred seventy thousand, two hundred forty-three".