231242771 has 4 divisors (see below), whose sum is σ = 235162200. Its totient is φ = 227323344.

The previous prime is 231242741. The next prime is 231242783. The reversal of 231242771 is 177242132.

231242771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231242771 - 2¹⁸ = 230980627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231242701) 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, 1959626 + ... + 1959743.

It is an arithmetic number, because the mean of its divisors is an integer number (58790550).

Almost surely, 2^231242771 is an apocalyptic number.

231242771 is a deficient number, since it is larger than the sum of its proper divisors (3919429).

231242771 is an equidigital number, since it uses as much as digits as its factorization.

231242771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919428.

The product of its digits is 4704, while the sum is 29.

The square root of 231242771 is about 15206.6686358321. The cubic root of 231242771 is about 613.7941171175.

The spelling of 231242771 in words is "two hundred thirty-one million, two hundred forty-two thousand, seven hundred seventy-one".