1324520231 has 4 divisors (see below), whose sum is σ = 1327856952. Its totient is φ = 1321183512.

The previous prime is 1324520227. The next prime is 1324520237. The reversal of 1324520231 is 1320254231.

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 1324520231 - 2² = 1324520227 is a prime.

It is a super-2 number, since 2×1324520231² = 3508707684656586722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1324520197 and 1324520206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1324520237) 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 3 ways as a sum of consecutive naturals, for example, 1667765 + ... + 1668558.

It is an arithmetic number, because the mean of its divisors is an integer number (331964238).

Almost surely, 2^1324520231 is an apocalyptic number.

1324520231 is a deficient number, since it is larger than the sum of its proper divisors (3336721).

1324520231 is an equidigital number, since it uses as much as digits as its factorization.

1324520231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336720.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1324520231 is about 36393.9587156990. The cubic root of 1324520231 is about 1098.2120350452.

Adding to 1324520231 its reverse (1320254231), we get a palindrome (2644774462).

The spelling of 1324520231 in words is "one billion, three hundred twenty-four million, five hundred twenty thousand, two hundred thirty-one".