131783941 has 2 divisors, whose sum is σ = 131783942. Its totient is φ = 131783940.

The previous prime is 131783923. The next prime is 131783987. The reversal of 131783941 is 149387131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84916225 + 46867716 = 9215^2 + 6846^2 .

It is a cyclic number.

It is not a de Polignac number, because 131783941 - 2¹⁷ = 131652869 is a prime.

It is equal to p_7473691 and since 131783941 and 7473691 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131783941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131783921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65891970 + 65891971.

It is an arithmetic number, because the mean of its divisors is an integer number (65891971).

Almost surely, 2^131783941 is an apocalyptic number.

It is an amenable number.

131783941 is a deficient number, since it is larger than the sum of its proper divisors (1).

131783941 is an equidigital number, since it uses as much as digits as its factorization.

131783941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 131783941 is about 11479.7186812221. The cubic root of 131783941 is about 508.8863833960.

It can be divided in two parts, 1317 and 83941, that added together give a palindrome (85258).

The spelling of 131783941 in words is "one hundred thirty-one million, seven hundred eighty-three thousand, nine hundred forty-one".