231456 has 24 divisors (see below), whose sum is σ = 607824. Its totient is φ = 77120.

The previous prime is 231443. The next prime is 231461. The reversal of 231456 is 654132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

231456 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110 + ... + 1301.

It is an arithmetic number, because the mean of its divisors is an integer number (25326).

2²³¹⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

231456 is an abundant number, since it is smaller than the sum of its proper divisors (376368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231456 is a wasteful number, since it uses less digits than its factorization.

231456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2416 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 231456 is about 481.0987424635. The cubic root of 231456 is about 61.3982719047.

Adding to 231456 its reverse (654132), we get a palindrome (885588).

The spelling of 231456 in words is "two hundred thirty-one thousand, four hundred fifty-six".