231050917 has 4 divisors (see below), whose sum is σ = 239018220. Its totient is φ = 223083616.

The previous prime is 231050899. The next prime is 231050921. The reversal of 231050917 is 719050132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58890276 + 172160641 = 7674^2 + 13121^2 .

It is a cyclic number.

It is not a de Polignac number, because 231050917 - 2²³ = 222662309 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 (231050947) 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, 3983608 + ... + 3983665.

It is an arithmetic number, because the mean of its divisors is an integer number (59754555).

Almost surely, 2^231050917 is an apocalyptic number.

It is an amenable number.

231050917 is a deficient number, since it is larger than the sum of its proper divisors (7967303).

231050917 is an equidigital number, since it uses as much as digits as its factorization.

231050917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7967302.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 231050917 is about 15200.3591076001. The cubic root of 231050917 is about 613.6243223489.

The spelling of 231050917 in words is "two hundred thirty-one million, fifty thousand, nine hundred seventeen".