231320001 has 16 divisors (see below), whose sum is σ = 336869568. Its totient is φ = 140025600.

The previous prime is 231319987. The next prime is 231320009. The reversal of 231320001 is 100023132.

It is a happy number.

231320001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231320001 - 2⁶ = 231319937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231320009) 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, 27181 + ... + 34661.

It is an arithmetic number, because the mean of its divisors is an integer number (21054348).

Almost surely, 2^231320001 is an apocalyptic number.

It is an amenable number.

231320001 is a deficient number, since it is larger than the sum of its proper divisors (105549567).

231320001 is a wasteful number, since it uses less digits than its factorization.

231320001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8432.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 231320001 is about 15209.2077702949. The cubic root of 231320001 is about 613.8624407574.

Adding to 231320001 its reverse (100023132), we get a palindrome (331343133).

The spelling of 231320001 in words is "two hundred thirty-one million, three hundred twenty thousand, one".