131006613 has 4 divisors (see below), whose sum is σ = 174675488. Its totient is φ = 87337740.

The previous prime is 131006599. The next prime is 131006621. The reversal of 131006613 is 316600131.

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 131006613 - 2¹² = 131002517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131006613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131006633) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21834433 + ... + 21834438.

It is an arithmetic number, because the mean of its divisors is an integer number (43668872).

Almost surely, 2^131006613 is an apocalyptic number.

It is an amenable number.

131006613 is a deficient number, since it is larger than the sum of its proper divisors (43668875).

131006613 is an equidigital number, since it uses as much as digits as its factorization.

131006613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43668874.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 131006613 is about 11445.8120288602. The cubic root of 131006613 is about 507.8838536731.

Adding to 131006613 its reverse (316600131), we get a palindrome (447606744).

The spelling of 131006613 in words is "one hundred thirty-one million, six thousand, six hundred thirteen".