231233501 has 8 divisors (see below), whose sum is σ = 239376600. Its totient is φ = 223101760.

The previous prime is 231233491. The next prime is 231233531. The reversal of 231233501 is 105332132.

It can be written as a sum of positive squares in 4 ways, for example, as 54316900 + 176916601 = 7370^2 + 13301^2 .

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 231233501 - 2¹⁴ = 231217117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231233531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78035 + ... + 80943.

It is an arithmetic number, because the mean of its divisors is an integer number (29922075).

Almost surely, 2^231233501 is an apocalyptic number.

It is an amenable number.

231233501 is a deficient number, since it is larger than the sum of its proper divisors (8143099).

231233501 is a wasteful number, since it uses less digits than its factorization.

231233501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5679.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 231233501 is about 15206.3638322907. The cubic root of 231233501 is about 613.7859151350.

Adding to 231233501 its reverse (105332132), we get a palindrome (336565633).

The spelling of 231233501 in words is "two hundred thirty-one million, two hundred thirty-three thousand, five hundred one".