131278141 has 2 divisors, whose sum is σ = 131278142. Its totient is φ = 131278140.

The previous prime is 131278129. The next prime is 131278153. The reversal of 131278141 is 141872131.

It is a balanced prime because it is at equal distance from previous prime (131278129) and next prime (131278153).

It can be written as a sum of positive squares in only one way, i.e., 130622041 + 656100 = 11429^2 + 810^2 .

It is a cyclic number.

It is not a de Polignac number, because 131278141 - 2¹³ = 131269949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131278841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65639070 + 65639071.

It is an arithmetic number, because the mean of its divisors is an integer number (65639071).

Almost surely, 2^131278141 is an apocalyptic number.

It is an amenable number.

131278141 is a deficient number, since it is larger than the sum of its proper divisors (1).

131278141 is an equidigital number, since it uses as much as digits as its factorization.

131278141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 28.

The square root of 131278141 is about 11457.6673454940. The cubic root of 131278141 is about 508.2344963324.

The spelling of 131278141 in words is "one hundred thirty-one million, two hundred seventy-eight thousand, one hundred forty-one".