131332513 has 4 divisors (see below), whose sum is σ = 141435028. Its totient is φ = 121230000.

The previous prime is 131332459. The next prime is 131332559. The reversal of 131332513 is 315233131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67699984 + 63632529 = 8228^2 + 7977^2 .

It is a cyclic number.

It is not a de Polignac number, because 131332513 - 2¹³ = 131324321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131332613) 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, 5051238 + ... + 5051263.

It is an arithmetic number, because the mean of its divisors is an integer number (35358757).

Almost surely, 2^131332513 is an apocalyptic number.

131332513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131332513 is a deficient number, since it is larger than the sum of its proper divisors (10102515).

131332513 is a wasteful number, since it uses less digits than its factorization.

131332513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102514.

The product of its digits is 810, while the sum is 22.

The square root of 131332513 is about 11460.0398341367. The cubic root of 131332513 is about 508.3046524951.

Adding to 131332513 its reverse (315233131), we get a palindrome (446565644).

The spelling of 131332513 in words is "one hundred thirty-one million, three hundred thirty-two thousand, five hundred thirteen".