231522801 has 16 divisors (see below), whose sum is σ = 320323584. Its totient is φ = 148621824.

The previous prime is 231522791. The next prime is 231522817. The reversal of 231522801 is 108225132.

It is not a de Polignac number, because 231522801 - 2⁶ = 231522737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231522701) 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, 16 + ... + 21518.

It is an arithmetic number, because the mean of its divisors is an integer number (20020224).

Almost surely, 2^231522801 is an apocalyptic number.

It is an amenable number.

231522801 is a deficient number, since it is larger than the sum of its proper divisors (88800783).

231522801 is a wasteful number, since it uses less digits than its factorization.

231522801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21640.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 231522801 is about 15215.8733236052. The cubic root of 231522801 is about 614.0417809777.

Adding to 231522801 its reverse (108225132), we get a palindrome (339747933).

The spelling of 231522801 in words is "two hundred thirty-one million, five hundred twenty-two thousand, eight hundred one".