231087047 has 4 divisors (see below), whose sum is σ = 231146136. Its totient is φ = 231027960.

The previous prime is 231087019. The next prime is 231087053. The reversal of 231087047 is 740780132.

It is a happy number.

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 231087047 - 2⁶ = 231086983 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 (231087007) 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, 23228 + ... + 31649.

It is an arithmetic number, because the mean of its divisors is an integer number (57786534).

Almost surely, 2^231087047 is an apocalyptic number.

231087047 is a deficient number, since it is larger than the sum of its proper divisors (59089).

231087047 is an equidigital number, since it uses as much as digits as its factorization.

231087047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59088.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 231087047 is about 15201.5475199073. The cubic root of 231087047 is about 613.6563053299.

The spelling of 231087047 in words is "two hundred thirty-one million, eighty-seven thousand, forty-seven".