131321452 has 24 divisors (see below), whose sum is σ = 234442656. Its totient is φ = 64349568.

The previous prime is 131321419. The next prime is 131321453. The reversal of 131321452 is 254123131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131321453) 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 7 ways as a sum of consecutive naturals, for example, 47418 + ... + 50110.

It is an arithmetic number, because the mean of its divisors is an integer number (9768444).

Almost surely, 2^131321452 is an apocalyptic number.

It is an amenable number.

131321452 is a deficient number, since it is larger than the sum of its proper divisors (103121204).

131321452 is a wasteful number, since it uses less digits than its factorization.

131321452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2937 (or 2935 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 131321452 is about 11459.5572340296. The cubic root of 131321452 is about 508.2903820618.

Adding to 131321452 its reverse (254123131), we get a palindrome (385444583).

The spelling of 131321452 in words is "one hundred thirty-one million, three hundred twenty-one thousand, four hundred fifty-two".