131800001317 has 2 divisors, whose sum is σ = 131800001318. Its totient is φ = 131800001316.

The previous prime is 131800001279. The next prime is 131800001321. The reversal of 131800001317 is 713100008131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109535183521 + 22264817796 = 330961^2 + 149214^2 .

It is a cyclic number.

It is not a de Polignac number, because 131800001317 - 2⁷ = 131800001189 is a prime.

It is a super-2 number, since 2×131800001317² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131800001291 and 131800001300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131800001617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65900000658 + 65900000659.

It is an arithmetic number, because the mean of its divisors is an integer number (65900000659).

Almost surely, 2^131800001317 is an apocalyptic number.

It is an amenable number.

131800001317 is a deficient number, since it is larger than the sum of its proper divisors (1).

131800001317 is an equidigital number, since it uses as much as digits as its factorization.

131800001317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 131800001317 its reverse (713100008131), we get a palindrome (844900009448).

The spelling of 131800001317 in words is "one hundred thirty-one billion, eight hundred million, one thousand, three hundred seventeen".