131091941 has 2 divisors, whose sum is σ = 131091942. Its totient is φ = 131091940.

The previous prime is 131091899. The next prime is 131091953. The reversal of 131091941 is 149190131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121660900 + 9431041 = 11030^2 + 3071^2 .

It is an emirp because it is prime and its reverse (149190131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131091941 - 2¹⁰ = 131090917 is a prime.

It is a Chen prime.

It is equal to p_7436621 and since 131091941 and 7436621 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131091971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65545970 + 65545971.

It is an arithmetic number, because the mean of its divisors is an integer number (65545971).

Almost surely, 2^131091941 is an apocalyptic number.

It is an amenable number.

131091941 is a deficient number, since it is larger than the sum of its proper divisors (1).

131091941 is an equidigital number, since it uses as much as digits as its factorization.

131091941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 131091941 is about 11449.5388990125. The cubic root of 131091941 is about 507.9940957112.

The spelling of 131091941 in words is "one hundred thirty-one million, ninety-one thousand, nine hundred forty-one".