131434217 has 2 divisors, whose sum is σ = 131434218. Its totient is φ = 131434216.

The previous prime is 131434201. The next prime is 131434243. The reversal of 131434217 is 712434131.

It is an a-pointer prime, because the next prime (131434243) can be obtained adding 131434217 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71588521 + 59845696 = 8461^2 + 7736^2 .

It is a cyclic number.

It is not a de Polignac number, because 131434217 - 2⁴ = 131434201 is a prime.

It is not a weakly prime, because it can be changed into another prime (131434297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65717108 + 65717109.

It is an arithmetic number, because the mean of its divisors is an integer number (65717109).

Almost surely, 2^131434217 is an apocalyptic number.

It is an amenable number.

131434217 is a deficient number, since it is larger than the sum of its proper divisors (1).

131434217 is an equidigital number, since it uses as much as digits as its factorization.

131434217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 131434217 is about 11464.4763072720. The cubic root of 131434217 is about 508.4358291456.

Adding to 131434217 its reverse (712434131), we get a palindrome (843868348).

The spelling of 131434217 in words is "one hundred thirty-one million, four hundred thirty-four thousand, two hundred seventeen".