230640871 has 4 divisors (see below), whose sum is σ = 230673744. Its totient is φ = 230608000.

The previous prime is 230640859. The next prime is 230640881. The reversal of 230640871 is 178046032.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 230640871 - 2⁹ = 230640359 is a prime.

It is a super-2 number, since 2×230640871² = 106390422751277282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230640821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210 + ... + 21511.

It is an arithmetic number, because the mean of its divisors is an integer number (57668436).

Almost surely, 2^230640871 is an apocalyptic number.

230640871 is a deficient number, since it is larger than the sum of its proper divisors (32873).

230640871 is a wasteful number, since it uses less digits than its factorization.

230640871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32872.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 230640871 is about 15186.8650813787. The cubic root of 230640871 is about 613.2611077588.

The spelling of 230640871 in words is "two hundred thirty million, six hundred forty thousand, eight hundred seventy-one".