231506887 has 8 divisors (see below), whose sum is σ = 243831600. Its totient is φ = 219196224.

The previous prime is 231506857. The next prime is 231506917. The reversal of 231506887 is 788605132.

It is an interprime number because it is at equal distance from previous prime (231506857) and next prime (231506917).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231506887 - 2¹⁵ = 231474119 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 (231506827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59073 + ... + 62869.

It is an arithmetic number, because the mean of its divisors is an integer number (30478950).

Almost surely, 2^231506887 is an apocalyptic number.

231506887 is a deficient number, since it is larger than the sum of its proper divisors (12324713).

231506887 is a wasteful number, since it uses less digits than its factorization.

231506887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7025.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 231506887 is about 15215.3503738823. The cubic root of 231506887 is about 614.0277116870.

The spelling of 231506887 in words is "two hundred thirty-one million, five hundred six thousand, eight hundred eighty-seven".