131036613 has 4 divisors (see below), whose sum is σ = 174715488. Its totient is φ = 87357740.

The previous prime is 131036593. The next prime is 131036623. The reversal of 131036613 is 316630131.

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 a cyclic number.

It is not a de Polignac number, because 131036613 - 2¹⁰ = 131035589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131036623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21839433 + ... + 21839438.

It is an arithmetic number, because the mean of its divisors is an integer number (43678872).

Almost surely, 2^131036613 is an apocalyptic number.

It is an amenable number.

131036613 is a deficient number, since it is larger than the sum of its proper divisors (43678875).

131036613 is an equidigital number, since it uses as much as digits as its factorization.

131036613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43678874.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 131036613 is about 11447.1224768498. The cubic root of 131036613 is about 507.9226185170.

Adding to 131036613 its reverse (316630131), we get a palindrome (447666744).

The spelling of 131036613 in words is "one hundred thirty-one million, thirty-six thousand, six hundred thirteen".