131277917 has 8 divisors (see below), whose sum is σ = 133613472. Its totient is φ = 128948400.

The previous prime is 131277907. The next prime is 131277931. The reversal of 131277917 is 719772131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131277917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131277907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77918 + ... + 79584.

It is an arithmetic number, because the mean of its divisors is an integer number (16701684).

Almost surely, 2^131277917 is an apocalyptic number.

It is an amenable number.

131277917 is a deficient number, since it is larger than the sum of its proper divisors (2335555).

131277917 is a wasteful number, since it uses less digits than its factorization.

131277917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019.

The product of its digits is 18522, while the sum is 38.

The square root of 131277917 is about 11457.6575703762. The cubic root of 131277917 is about 508.2342072653.

The spelling of 131277917 in words is "one hundred thirty-one million, two hundred seventy-seven thousand, nine hundred seventeen".