231094987 has 16 divisors (see below), whose sum is σ = 243302400. Its totient is φ = 219229920.

The previous prime is 231094973. The next prime is 231095017. The reversal of 231094987 is 789490132.

It is a cyclic number.

It is not a de Polignac number, because 231094987 - 2²⁷ = 96877259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231094187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482214 + ... + 482692.

It is an arithmetic number, because the mean of its divisors is an integer number (15206400).

Almost surely, 2^231094987 is an apocalyptic number.

231094987 is a deficient number, since it is larger than the sum of its proper divisors (12207413).

231094987 is a wasteful number, since it uses less digits than its factorization.

231094987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 231094987 is about 15201.8086752860. The cubic root of 231094987 is about 613.6633335260.

The spelling of 231094987 in words is "two hundred thirty-one million, ninety-four thousand, nine hundred eighty-seven".