131403135615 has 16 divisors (see below), whose sum is σ = 210732834816. Its totient is φ = 69919066400.

The previous prime is 131403135599. The next prime is 131403135629. The reversal of 131403135615 is 516531304131.

It is a happy number.

It is not a de Polignac number, because 131403135615 - 2⁴ = 131403135599 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10156191 + ... + 10169120.

It is an arithmetic number, because the mean of its divisors is an integer number (13170802176).

Almost surely, 2^131403135615 is an apocalyptic number.

131403135615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131403135615 is a deficient number, since it is larger than the sum of its proper divisors (79329699201).

131403135615 is a wasteful number, since it uses less digits than its factorization.

131403135615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20325750.

The product of its (nonzero) digits is 16200, while the sum is 33.

Adding to 131403135615 its reverse (516531304131), we get a palindrome (647934439746).

The spelling of 131403135615 in words is "one hundred thirty-one billion, four hundred three million, one hundred thirty-five thousand, six hundred fifteen".