131024613 has 4 divisors (see below), whose sum is σ = 174699488. Its totient is φ = 87349740.

The previous prime is 131024609. The next prime is 131024651. The reversal of 131024613 is 316420131.

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 131024613 - 2² = 131024609 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 131024613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131026613) 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, 21837433 + ... + 21837438.

It is an arithmetic number, because the mean of its divisors is an integer number (43674872).

Almost surely, 2^131024613 is an apocalyptic number.

It is an amenable number.

131024613 is a deficient number, since it is larger than the sum of its proper divisors (43674875).

131024613 is an equidigital number, since it uses as much as digits as its factorization.

131024613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43674874.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 131024613 is about 11446.5983156569. The cubic root of 131024613 is about 507.9071132895.

Adding to 131024613 its reverse (316420131), we get a palindrome (447444744).

The spelling of 131024613 in words is "one hundred thirty-one million, twenty-four thousand, six hundred thirteen".