131245830173 has 2 divisors, whose sum is σ = 131245830174. Its totient is φ = 131245830172.

The previous prime is 131245830109. The next prime is 131245830179. The reversal of 131245830173 is 371038542131.

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., 120196036249 + 11049793924 = 346693^2 + 105118^2 .

It is a cyclic number.

It is not a de Polignac number, because 131245830173 - 2⁶ = 131245830109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131245830179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65622915086 + 65622915087.

It is an arithmetic number, because the mean of its divisors is an integer number (65622915087).

Almost surely, 2^131245830173 is an apocalyptic number.

It is an amenable number.

131245830173 is a deficient number, since it is larger than the sum of its proper divisors (1).

131245830173 is an equidigital number, since it uses as much as digits as its factorization.

131245830173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 131245830173 in words is "one hundred thirty-one billion, two hundred forty-five million, eight hundred thirty thousand, one hundred seventy-three".