231012223 has 16 divisors (see below), whose sum is σ = 253529920. Its totient is φ = 209205504.

The previous prime is 231012169. The next prime is 231012233. The reversal of 231012223 is 322210132.

It is a cyclic number.

It is not a de Polignac number, because 231012223 - 2¹³ = 231004031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231012197 and 231012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231012233) 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, 216790 + ... + 217852.

It is an arithmetic number, because the mean of its divisors is an integer number (15845620).

Almost surely, 2^231012223 is an apocalyptic number.

231012223 is a deficient number, since it is larger than the sum of its proper divisors (22517697).

231012223 is a wasteful number, since it uses less digits than its factorization.

231012223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 231012223 is about 15199.0862554300. The cubic root of 231012223 is about 613.5900659674.

Adding to 231012223 its reverse (322210132), we get a palindrome (553222355).

The spelling of 231012223 in words is "two hundred thirty-one million, twelve thousand, two hundred twenty-three".