131043889 has 2 divisors, whose sum is σ = 131043890. Its totient is φ = 131043888.

The previous prime is 131043883. The next prime is 131043901. The reversal of 131043889 is 988340131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117353889 + 13690000 = 10833^2 + 3700^2 .

It is a cyclic number.

It is not a de Polignac number, because 131043889 - 2³ = 131043881 is a prime.

It is not a weakly prime, because it can be changed into another prime (131043881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65521944 + 65521945.

It is an arithmetic number, because the mean of its divisors is an integer number (65521945).

Almost surely, 2^131043889 is an apocalyptic number.

It is an amenable number.

131043889 is a deficient number, since it is larger than the sum of its proper divisors (1).

131043889 is an equidigital number, since it uses as much as digits as its factorization.

131043889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 131043889 is about 11447.4402815651. The cubic root of 131043889 is about 507.9320193923.

The spelling of 131043889 in words is "one hundred thirty-one million, forty-three thousand, eight hundred eighty-nine".