230691871 has 4 divisors (see below), whose sum is σ = 236318544. Its totient is φ = 225065200.

The previous prime is 230691821. The next prime is 230691889. The reversal of 230691871 is 178196032.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230691871 is a prime.

It is a super-3 number, since 3×230691871³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230691871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230691821) 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, 2813275 + ... + 2813356.

It is an arithmetic number, because the mean of its divisors is an integer number (59079636).

Almost surely, 2^230691871 is an apocalyptic number.

230691871 is a deficient number, since it is larger than the sum of its proper divisors (5626673).

230691871 is an equidigital number, since it uses as much as digits as its factorization.

230691871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626672.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 230691871 is about 15188.5440711083. The cubic root of 230691871 is about 613.3063064716.

The spelling of 230691871 in words is "two hundred thirty million, six hundred ninety-one thousand, eight hundred seventy-one".