231025099 has 4 divisors (see below), whose sum is σ = 231194736. Its totient is φ = 230855464.

The previous prime is 231025063. The next prime is 231025103. The reversal of 231025099 is 990520132.

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

It is a cyclic number.

It is not a de Polignac number, because 231025099 - 2⁹ = 231024587 is a prime.

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 231025099.

It is not an unprimeable number, because it can be changed into a prime (231025499) 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, 82759 + ... + 85504.

It is an arithmetic number, because the mean of its divisors is an integer number (57798684).

Almost surely, 2^231025099 is an apocalyptic number.

231025099 is a deficient number, since it is larger than the sum of its proper divisors (169637).

231025099 is a wasteful number, since it uses less digits than its factorization.

231025099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169636.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 231025099 is about 15199.5098276227. The cubic root of 231025099 is about 613.6014657089.

The spelling of 231025099 in words is "two hundred thirty-one million, twenty-five thousand, ninety-nine".