231177047 has 4 divisors (see below), whose sum is σ = 243344280. Its totient is φ = 219009816.

The previous prime is 231177029. The next prime is 231177053. The reversal of 231177047 is 740771132.

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 231177047 - 2⁸ = 231176791 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 (231177077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6083588 + ... + 6083625.

It is an arithmetic number, because the mean of its divisors is an integer number (60836070).

Almost surely, 2^231177047 is an apocalyptic number.

231177047 is a deficient number, since it is larger than the sum of its proper divisors (12167233).

231177047 is a wasteful number, since it uses less digits than its factorization.

231177047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12167232.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 231177047 is about 15204.5074566722. The cubic root of 231177047 is about 613.7359605938.

The spelling of 231177047 in words is "two hundred thirty-one million, one hundred seventy-seven thousand, forty-seven".