231426047 has 4 divisors (see below), whose sum is σ = 233717496. Its totient is φ = 229134600.

The previous prime is 231426031. The next prime is 231426059. The reversal of 231426047 is 740624132.

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 231426047 - 2⁴ = 231426031 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 (231426347) 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, 1145573 + ... + 1145774.

It is an arithmetic number, because the mean of its divisors is an integer number (58429374).

Almost surely, 2^231426047 is an apocalyptic number.

231426047 is a deficient number, since it is larger than the sum of its proper divisors (2291449).

231426047 is a wasteful number, since it uses less digits than its factorization.

231426047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291448.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 231426047 is about 15212.6936142157. The cubic root of 231426047 is about 613.9562324901.

The spelling of 231426047 in words is "two hundred thirty-one million, four hundred twenty-six thousand, forty-seven".