131215117 has 8 divisors (see below), whose sum is σ = 146189952. Its totient is φ = 116748000.

The previous prime is 131215109. The next prime is 131215127. The reversal of 131215117 is 711512131.

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

It is not a de Polignac number, because 131215117 - 2³ = 131215109 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 (131215127) 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, 126384 + ... + 127417.

It is an arithmetic number, because the mean of its divisors is an integer number (18273744).

Almost surely, 2^131215117 is an apocalyptic number.

It is an amenable number.

131215117 is a deficient number, since it is larger than the sum of its proper divisors (14974835).

131215117 is a wasteful number, since it uses less digits than its factorization.

131215117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253859.

The product of its digits is 210, while the sum is 22.

The square root of 131215117 is about 11454.9167172878. The cubic root of 131215117 is about 508.1531522543.

Adding to 131215117 its reverse (711512131), we get a palindrome (842727248).

The spelling of 131215117 in words is "one hundred thirty-one million, two hundred fifteen thousand, one hundred seventeen".