131214817 has 4 divisors (see below), whose sum is σ = 138120880. Its totient is φ = 124308756.

The previous prime is 131214773. The next prime is 131214833. The reversal of 131214817 is 718412131.

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: 718412131 = 3697 ⋅194323.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131214817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131214217) 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, 3453003 + ... + 3453040.

It is an arithmetic number, because the mean of its divisors is an integer number (34530220).

Almost surely, 2^131214817 is an apocalyptic number.

It is an amenable number.

131214817 is a deficient number, since it is larger than the sum of its proper divisors (6906063).

131214817 is an equidigital number, since it uses as much as digits as its factorization.

131214817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6906062.

The product of its digits is 1344, while the sum is 28.

The square root of 131214817 is about 11454.9036224667. The cubic root of 131214817 is about 508.1527649868.

Adding to 131214817 its reverse (718412131), we get a palindrome (849626948).

It can be divided in two parts, 1312 and 14817, that added together give a square (16129 = 127²).

The spelling of 131214817 in words is "one hundred thirty-one million, two hundred fourteen thousand, eight hundred seventeen".