131420417 has 2 divisors, whose sum is σ = 131420418. Its totient is φ = 131420416.

The previous prime is 131420407. The next prime is 131420423. The reversal of 131420417 is 714024131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117700801 + 13719616 = 10849^2 + 3704^2 .

It is a cyclic number.

It is not a de Polignac number, because 131420417 - 2²⁶ = 64311553 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 131420392 and 131420401.

It is not a weakly prime, because it can be changed into another prime (131420407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65710208 + 65710209.

It is an arithmetic number, because the mean of its divisors is an integer number (65710209).

Almost surely, 2^131420417 is an apocalyptic number.

It is an amenable number.

131420417 is a deficient number, since it is larger than the sum of its proper divisors (1).

131420417 is an equidigital number, since it uses as much as digits as its factorization.

131420417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 131420417 is about 11463.8744323200. The cubic root of 131420417 is about 508.4180340332.

Adding to 131420417 its reverse (714024131), we get a palindrome (845444548).

The spelling of 131420417 in words is "one hundred thirty-one million, four hundred twenty thousand, four hundred seventeen".