231564867 has 8 divisors (see below), whose sum is σ = 313102080. Its totient is φ = 152202120.

The previous prime is 231564863. The next prime is 231564869. The reversal of 231564867 is 768465132.

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

It is not a de Polignac number, because 231564867 - 2² = 231564863 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (231564863) 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, 543367 + ... + 543792.

It is an arithmetic number, because the mean of its divisors is an integer number (39137760).

Almost surely, 2^231564867 is an apocalyptic number.

231564867 is a deficient number, since it is larger than the sum of its proper divisors (81537213).

231564867 is a wasteful number, since it uses less digits than its factorization.

231564867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087233.

The product of its digits is 241920, while the sum is 42.

The square root of 231564867 is about 15217.2555672828. The cubic root of 231564867 is about 614.0789676928.

The spelling of 231564867 in words is "two hundred thirty-one million, five hundred sixty-four thousand, eight hundred sixty-seven".