131147915 has 4 divisors (see below), whose sum is σ = 157377504. Its totient is φ = 104918328.

The previous prime is 131147903. The next prime is 131147921. The reversal of 131147915 is 519741131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131147915 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13114787 + ... + 13114796.

It is an arithmetic number, because the mean of its divisors is an integer number (39344376).

Almost surely, 2^131147915 is an apocalyptic number.

131147915 is a deficient number, since it is larger than the sum of its proper divisors (26229589).

131147915 is an equidigital number, since it uses as much as digits as its factorization.

131147915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26229588.

The product of its digits is 3780, while the sum is 32.

The square root of 131147915 is about 11451.9830160545. The cubic root of 131147915 is about 508.0663869984.

The spelling of 131147915 in words is "one hundred thirty-one million, one hundred forty-seven thousand, nine hundred fifteen".