1231010223 has 4 divisors (see below), whose sum is σ = 1641346968. Its totient is φ = 820673480.

The previous prime is 1231010213. The next prime is 1231010227. The reversal of 1231010223 is 3220101321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1231010223 - 2⁹ = 1231009711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231010227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205168368 + ... + 205168373.

It is an arithmetic number, because the mean of its divisors is an integer number (410336742).

Almost surely, 2^1231010223 is an apocalyptic number.

1231010223 is a deficient number, since it is larger than the sum of its proper divisors (410336745).

1231010223 is an equidigital number, since it uses as much as digits as its factorization.

1231010223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410336744.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1231010223 is about 35085.7552719049. The cubic root of 1231010223 is about 1071.7345212947.

Adding to 1231010223 its reverse (3220101321), we get a palindrome (4451111544).

The spelling of 1231010223 in words is "one billion, two hundred thirty-one million, ten thousand, two hundred twenty-three".