131413615 has 4 divisors (see below), whose sum is σ = 157696344. Its totient is φ = 105130888.

The previous prime is 131413613. The next prime is 131413637. The reversal of 131413615 is 516314131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131413615 - 2¹ = 131413613 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 131413615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131413613) 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, 13141357 + ... + 13141366.

It is an arithmetic number, because the mean of its divisors is an integer number (39424086).

Almost surely, 2^131413615 is an apocalyptic number.

131413615 is a deficient number, since it is larger than the sum of its proper divisors (26282729).

131413615 is an equidigital number, since it uses as much as digits as its factorization.

131413615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26282728.

The product of its digits is 1080, while the sum is 25.

The square root of 131413615 is about 11463.5777574019. The cubic root of 131413615 is about 508.4092623897.

Adding to 131413615 its reverse (516314131), we get a palindrome (647727746).

The spelling of 131413615 in words is "one hundred thirty-one million, four hundred thirteen thousand, six hundred fifteen".