131609011 has 2 divisors, whose sum is σ = 131609012. Its totient is φ = 131609010.

The previous prime is 131608969. The next prime is 131609039. The reversal of 131609011 is 110906131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131609011 - 2¹¹ = 131606963 is a prime.

It is not a weakly prime, because it can be changed into another prime (131609081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65804505 + 65804506.

It is an arithmetic number, because the mean of its divisors is an integer number (65804506).

Almost surely, 2^131609011 is an apocalyptic number.

131609011 is a deficient number, since it is larger than the sum of its proper divisors (1).

131609011 is an equidigital number, since it uses as much as digits as its factorization.

131609011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 131609011 is about 11472.0970620022. The cubic root of 131609011 is about 508.6611184368.

The spelling of 131609011 in words is "one hundred thirty-one million, six hundred nine thousand, eleven".