231407 has 8 divisors (see below), whose sum is σ = 256080. Its totient is φ = 207360.

The previous prime is 231379. The next prime is 231409. The reversal of 231407 is 704132.

It is a happy number.

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 231407 - 2¹⁰ = 230383 is a prime.

231407 is a modest number, since divided by 407 gives 231 as remainder.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 231407.

It is not an unprimeable number, because it can be changed into a prime (231409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1103 + ... + 1295.

It is an arithmetic number, because the mean of its divisors is an integer number (32010).

2²³¹⁴⁰⁷ is an apocalyptic number.

231407 is a deficient number, since it is larger than the sum of its proper divisors (24673).

231407 is a wasteful number, since it uses less digits than its factorization.

231407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 231407 is about 481.0478146713. The cubic root of 231407 is about 61.3939388599.

Adding to 231407 its reverse (704132), we get a palindrome (935539).

The spelling of 231407 in words is "two hundred thirty-one thousand, four hundred seven".