131345613 has 48 divisors (see below), whose sum is σ = 229806720. Its totient is φ = 70616448.

The previous prime is 131345593. The next prime is 131345633. The reversal of 131345613 is 316543131.

131345613 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 45 + 613 = 666.

It is an interprime number because it is at equal distance from previous prime (131345593) and next prime (131345633).

It is not a de Polignac number, because 131345613 - 2⁵ = 131345581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131345633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235531 + ... + 236087.

It is an arithmetic number, because the mean of its divisors is an integer number (4787640).

Almost surely, 2^131345613 is an apocalyptic number.

It is an amenable number.

131345613 is a deficient number, since it is larger than the sum of its proper divisors (98461107).

131345613 is a wasteful number, since it uses less digits than its factorization.

131345613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 783 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 131345613 is about 11460.6113711268. The cubic root of 131345613 is about 508.3215525234.

Adding to 131345613 its reverse (316543131), we get a palindrome (447888744).

It can be divided in two parts, 131 and 345613, that added together give a square (345744 = 588²).

The spelling of 131345613 in words is "one hundred thirty-one million, three hundred forty-five thousand, six hundred thirteen".