1232231213 has 8 divisors (see below), whose sum is σ = 1316263608. Its totient is φ = 1149481984.

The previous prime is 1232231207. The next prime is 1232231219. The reversal of 1232231213 is 3121322321.

It is an interprime number because it is at equal distance from previous prime (1232231207) and next prime (1232231219).

It can be written as a sum of positive squares in 4 ways, for example, as 177475684 + 1054755529 = 13322^2 + 32477^2 .

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 1232231213 - 2¹⁰ = 1232230189 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 (1232231219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318806 + ... + 322647.

It is an arithmetic number, because the mean of its divisors is an integer number (164532951).

Almost surely, 2^1232231213 is an apocalyptic number.

It is an amenable number.

1232231213 is a deficient number, since it is larger than the sum of its proper divisors (84032395).

1232231213 is a wasteful number, since it uses less digits than its factorization.

1232231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641583.

The product of its digits is 432, while the sum is 20.

The square root of 1232231213 is about 35103.1510408966. The cubic root of 1232231213 is about 1072.0887411338.

Adding to 1232231213 its reverse (3121322321), we get a palindrome (4353553534).

The spelling of 1232231213 in words is "one billion, two hundred thirty-two million, two hundred thirty-one thousand, two hundred thirteen".