131343263969 has 2 divisors, whose sum is σ = 131343263970. Its totient is φ = 131343263968.

The previous prime is 131343263903. The next prime is 131343264007. The reversal of 131343263969 is 969362343131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131251870369 + 91393600 = 362287^2 + 9560^2 .

It is a cyclic number.

It is not a de Polignac number, because 131343263969 - 2¹⁶ = 131343198433 is a prime.

It is a super-2 number, since 2×131343263969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131343265969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65671631984 + 65671631985.

It is an arithmetic number, because the mean of its divisors is an integer number (65671631985).

Almost surely, 2^131343263969 is an apocalyptic number.

It is an amenable number.

131343263969 is a deficient number, since it is larger than the sum of its proper divisors (1).

131343263969 is an equidigital number, since it uses as much as digits as its factorization.

131343263969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 50.

The spelling of 131343263969 in words is "one hundred thirty-one billion, three hundred forty-three million, two hundred sixty-three thousand, nine hundred sixty-nine".