231232001 has 16 divisors (see below), whose sum is σ = 310466688. Its totient is φ = 166320000.

The previous prime is 231231997. The next prime is 231232003. The reversal of 231232001 is 100232132.

It is a happy number.

It is not a de Polignac number, because 231232001 - 2² = 231231997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231232003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114500 + ... + 116501.

It is an arithmetic number, because the mean of its divisors is an integer number (19404168).

Almost surely, 2^231232001 is an apocalyptic number.

It is an amenable number.

231232001 is a deficient number, since it is larger than the sum of its proper divisors (79234687).

231232001 is a wasteful number, since it uses less digits than its factorization.

231232001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231032.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 231232001 is about 15206.3145107551. The cubic root of 231232001 is about 613.7845879327.

Adding to 231232001 its reverse (100232132), we get a palindrome (331464133).

It can be divided in two parts, 231 and 232001, that added together give a palindrome (232232).

The spelling of 231232001 in words is "two hundred thirty-one million, two hundred thirty-two thousand, one".