131333688869 has 2 divisors, whose sum is σ = 131333688870. Its totient is φ = 131333688868.

The previous prime is 131333688851. The next prime is 131333688881. The reversal of 131333688869 is 968886333131.

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., 84863263969 + 46470424900 = 291313^2 + 215570^2 .

It is an emirp because it is prime and its reverse (968886333131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131333688869 is a prime.

It is a super-2 number, since 2×131333688869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131333688169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65666844434 + 65666844435.

It is an arithmetic number, because the mean of its divisors is an integer number (65666844435).

Almost surely, 2^131333688869 is an apocalyptic number.

It is an amenable number.

131333688869 is a deficient number, since it is larger than the sum of its proper divisors (1).

131333688869 is an equidigital number, since it uses as much as digits as its factorization.

131333688869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13436928, while the sum is 59.

The spelling of 131333688869 in words is "one hundred thirty-one billion, three hundred thirty-three million, six hundred eighty-eight thousand, eight hundred sixty-nine".