131510971 has 4 divisors (see below), whose sum is σ = 131578632. Its totient is φ = 131443312.

The previous prime is 131510933. The next prime is 131511001. The reversal of 131510971 is 179015131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179015131 = 19 ⋅9421849.

It is a cyclic number.

It is not a de Polignac number, because 131510971 - 2⁷ = 131510843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131510921) 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, 30826 + ... + 34831.

It is an arithmetic number, because the mean of its divisors is an integer number (32894658).

Almost surely, 2^131510971 is an apocalyptic number.

131510971 is a deficient number, since it is larger than the sum of its proper divisors (67661).

131510971 is an equidigital number, since it uses as much as digits as its factorization.

131510971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67660.

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 131510971 is about 11467.8232895349. The cubic root of 131510971 is about 508.5347807748.

The spelling of 131510971 in words is "one hundred thirty-one million, five hundred ten thousand, nine hundred seventy-one".