131345452 has 24 divisors (see below), whose sum is σ = 263463200. Its totient is φ = 56125440.

The previous prime is 131345443. The next prime is 131345477. The reversal of 131345452 is 254543131.

It is a super-2 number, since 2×131345452² = 34503255522168608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 131345452.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3052 + ... + 16492.

Almost surely, 2^131345452 is an apocalyptic number.

It is an amenable number.

131345452 is an abundant number, since it is smaller than the sum of its proper divisors (132117748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131345452 is a wasteful number, since it uses less digits than its factorization.

131345452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13801 (or 13799 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 131345452 is about 11460.6043470665. The cubic root of 131345452 is about 508.3213448276.

Adding to 131345452 its reverse (254543131), we get a palindrome (385888583).

The spelling of 131345452 in words is "one hundred thirty-one million, three hundred forty-five thousand, four hundred fifty-two".