131310971 has 4 divisors (see below), whose sum is σ = 143248344. Its totient is φ = 119373600.

The previous prime is 131310953. The next prime is 131310973. The reversal of 131310971 is 179013131.

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 131310971 - 2¹⁰ = 131309947 is a prime.

It is a super-2 number, since 2×131310971² = 34485142209925682, which contains 22 as substring.

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 131310971.

It is not an unprimeable number, because it can be changed into a prime (131310973) 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, 5968670 + ... + 5968691.

It is an arithmetic number, because the mean of its divisors is an integer number (35812086).

Almost surely, 2^131310971 is an apocalyptic number.

131310971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131310971 is a deficient number, since it is larger than the sum of its proper divisors (11937373).

131310971 is a wasteful number, since it uses less digits than its factorization.

131310971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11937372.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 131310971 is about 11459.0999210235. The cubic root of 131310971 is about 508.2768591805.

The spelling of 131310971 in words is "one hundred thirty-one million, three hundred ten thousand, nine hundred seventy-one".