1232313213 has 4 divisors (see below), whose sum is σ = 1643084288. Its totient is φ = 821542140.

The previous prime is 1232313197. The next prime is 1232313227. The reversal of 1232313213 is 3123132321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1232313213 - 2⁴ = 1232313197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232313213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232313263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205385533 + ... + 205385538.

It is an arithmetic number, because the mean of its divisors is an integer number (410771072).

Almost surely, 2^1232313213 is an apocalyptic number.

It is an amenable number.

1232313213 is a deficient number, since it is larger than the sum of its proper divisors (410771075).

1232313213 is an equidigital number, since it uses as much as digits as its factorization.

1232313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410771074.

The product of its digits is 648, while the sum is 21.

The square root of 1232313213 is about 35104.3190077802. The cubic root of 1232313213 is about 1072.1125216619.

Adding to 1232313213 its reverse (3123132321), we get a palindrome (4355445534).

The spelling of 1232313213 in words is "one billion, two hundred thirty-two million, three hundred thirteen thousand, two hundred thirteen".