231712147 has 8 divisors (see below), whose sum is σ = 235394000. Its totient is φ = 228044160.

The previous prime is 231712141. The next prime is 231712153. The reversal of 231712147 is 741217132.

It is an interprime number because it is at equal distance from previous prime (231712141) and next prime (231712153).

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

It is a cyclic number.

It is not a de Polignac number, because 231712147 - 2¹¹ = 231710099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231712141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33247 + ... + 39607.

It is an arithmetic number, because the mean of its divisors is an integer number (29424250).

Almost surely, 2^231712147 is an apocalyptic number.

231712147 is a deficient number, since it is larger than the sum of its proper divisors (3681853).

231712147 is an equidigital number, since it uses as much as digits as its factorization.

231712147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6933.

The product of its digits is 2352, while the sum is 28.

The square root of 231712147 is about 15222.0940412284. The cubic root of 231712147 is about 614.2091290368.

Adding to 231712147 its reverse (741217132), we get a palindrome (972929279).

The spelling of 231712147 in words is "two hundred thirty-one million, seven hundred twelve thousand, one hundred forty-seven".