131417681 has 4 divisors (see below), whose sum is σ = 131917632. Its totient is φ = 130917732.

The previous prime is 131417677. The next prime is 131417707. The reversal of 131417681 is 186714131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186714131 = 251 ⋅743881.

It is a cyclic number.

It is not a de Polignac number, because 131417681 - 2² = 131417677 is a prime.

It is a super-2 number, since 2×131417681² = 34541213758835522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131417621) 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, 249581 + ... + 250106.

It is an arithmetic number, because the mean of its divisors is an integer number (32979408).

Almost surely, 2^131417681 is an apocalyptic number.

It is an amenable number.

131417681 is a deficient number, since it is larger than the sum of its proper divisors (499951).

131417681 is an equidigital number, since it uses as much as digits as its factorization.

131417681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499950.

The product of its digits is 4032, while the sum is 32.

The square root of 131417681 is about 11463.7551003151. The cubic root of 131417681 is about 508.4145058107.

The spelling of 131417681 in words is "one hundred thirty-one million, four hundred seventeen thousand, six hundred eighty-one".