1217185589131 has 2 divisors, whose sum is σ = 1217185589132. Its totient is φ = 1217185589130.

The previous prime is 1217185589107. The next prime is 1217185589141. The reversal of 1217185589131 is 1319855817121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1217185589131 - 2⁵ = 1217185589099 is a prime.

It is a super-2 number, since 2×1217185589131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1217185589141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608592794565 + 608592794566.

It is an arithmetic number, because the mean of its divisors is an integer number (608592794566).

Almost surely, 2^{1217185589131} is an apocalyptic number.

1217185589131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217185589131 is an equidigital number, since it uses as much as digits as its factorization.

1217185589131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 52.

The spelling of 1217185589131 in words is "one trillion, two hundred seventeen billion, one hundred eighty-five million, five hundred eighty-nine thousand, one hundred thirty-one".