131317889 has 2 divisors, whose sum is σ = 131317890. Its totient is φ = 131317888.

The previous prime is 131317841. The next prime is 131317897. The reversal of 131317889 is 988713131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97851664 + 33466225 = 9892^2 + 5785^2 .

It is a cyclic number.

It is not a de Polignac number, because 131317889 - 2¹⁶ = 131252353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131347889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65658944 + 65658945.

It is an arithmetic number, because the mean of its divisors is an integer number (65658945).

Almost surely, 2^131317889 is an apocalyptic number.

It is an amenable number.

131317889 is a deficient number, since it is larger than the sum of its proper divisors (1).

131317889 is an equidigital number, since it uses as much as digits as its factorization.

131317889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 41.

The square root of 131317889 is about 11459.4017732166. The cubic root of 131317889 is about 508.2857850596.

The spelling of 131317889 in words is "one hundred thirty-one million, three hundred seventeen thousand, eight hundred eighty-nine".