231501223 has 8 divisors (see below), whose sum is σ = 245615328. Its totient is φ = 217442304.

The previous prime is 231501199. The next prime is 231501227. The reversal of 231501223 is 322105132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231501223 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 231501223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231501227) 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, 4986 + ... + 22087.

It is an arithmetic number, because the mean of its divisors is an integer number (30701916).

Almost surely, 2^231501223 is an apocalyptic number.

231501223 is a deficient number, since it is larger than the sum of its proper divisors (14114105).

231501223 is a wasteful number, since it uses less digits than its factorization.

231501223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27593.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 231501223 is about 15215.1642449235. The cubic root of 231501223 is about 614.0227040875.

Adding to 231501223 its reverse (322105132), we get a palindrome (553606355).

The spelling of 231501223 in words is "two hundred thirty-one million, five hundred one thousand, two hundred twenty-three".