131116615 has 16 divisors (see below), whose sum is σ = 181117440. Its totient is φ = 89258400.

The previous prime is 131116553. The next prime is 131116619. The reversal of 131116615 is 516611131.

It is not a de Polignac number, because 131116615 - 2¹¹ = 131114567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131116615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131116619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8611 + ... + 18340.

It is an arithmetic number, because the mean of its divisors is an integer number (11319840).

Almost surely, 2^131116615 is an apocalyptic number.

131116615 is a deficient number, since it is larger than the sum of its proper divisors (50000825).

131116615 is a wasteful number, since it uses less digits than its factorization.

131116615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27102.

The product of its digits is 540, while the sum is 25.

The square root of 131116615 is about 11450.6163589564. The cubic root of 131116615 is about 508.0259650998.

Adding to 131116615 its reverse (516611131), we get a palindrome (647727746).

The spelling of 131116615 in words is "one hundred thirty-one million, one hundred sixteen thousand, six hundred fifteen".