231982271 has 4 divisors (see below), whose sum is σ = 236918112. Its totient is φ = 227046432.

The previous prime is 231982259. The next prime is 231982307. The reversal of 231982271 is 172289132.

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 231982271 - 2¹⁸ = 231720127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231981271) 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, 2467850 + ... + 2467943.

It is an arithmetic number, because the mean of its divisors is an integer number (59229528).

Almost surely, 2^231982271 is an apocalyptic number.

231982271 is a deficient number, since it is larger than the sum of its proper divisors (4935841).

231982271 is an equidigital number, since it uses as much as digits as its factorization.

231982271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935840.

The product of its digits is 12096, while the sum is 35.

The square root of 231982271 is about 15230.9642176718. The cubic root of 231982271 is about 614.4477126968.

The spelling of 231982271 in words is "two hundred thirty-one million, nine hundred eighty-two thousand, two hundred seventy-one".