231056047 has 4 divisors (see below), whose sum is σ = 231357280. Its totient is φ = 230754816.

The previous prime is 231056039. The next prime is 231056069. The reversal of 231056047 is 740650132.

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 231056047 - 2³ = 231056039 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 (231056447) 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, 149463 + ... + 151000.

It is an arithmetic number, because the mean of its divisors is an integer number (57839320).

Almost surely, 2^231056047 is an apocalyptic number.

231056047 is a deficient number, since it is larger than the sum of its proper divisors (301233).

231056047 is an equidigital number, since it uses as much as digits as its factorization.

231056047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301232.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 231056047 is about 15200.5278526767. The cubic root of 231056047 is about 613.6288637281.

The spelling of 231056047 in words is "two hundred thirty-one million, fifty-six thousand, forty-seven".