231240401 has 8 divisors (see below), whose sum is σ = 266049600. Its totient is φ = 196874928.

The previous prime is 231240389. The next prime is 231240419. The reversal of 231240401 is 104042132.

231240401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231240401 - 2¹⁰ = 231239377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231240401.

It is not an unprimeable number, because it can be changed into a prime (231240481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109811 + ... + 111896.

It is an arithmetic number, because the mean of its divisors is an integer number (33256200).

Almost surely, 2^231240401 is an apocalyptic number.

It is an amenable number.

231240401 is a deficient number, since it is larger than the sum of its proper divisors (34809199).

231240401 is a wasteful number, since it uses less digits than its factorization.

231240401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221863.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 231240401 is about 15206.5907092944. The cubic root of 231240401 is about 613.7920201914.

Adding to 231240401 its reverse (104042132), we get a palindrome (335282533).

The spelling of 231240401 in words is "two hundred thirty-one million, two hundred forty thousand, four hundred one".