131292481 has 2 divisors, whose sum is σ = 131292482. Its totient is φ = 131292480.

The previous prime is 131292467. The next prime is 131292509. The reversal of 131292481 is 184292131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129754881 + 1537600 = 11391^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 131292481 - 2⁵ = 131292449 is a prime.

It is a super-2 number, since 2×131292481² = 34475431134270722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131292401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65646240 + 65646241.

It is an arithmetic number, because the mean of its divisors is an integer number (65646241).

Almost surely, 2^131292481 is an apocalyptic number.

It is an amenable number.

131292481 is a deficient number, since it is larger than the sum of its proper divisors (1).

131292481 is an equidigital number, since it uses as much as digits as its factorization.

131292481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 131292481 is about 11458.2931102324. The cubic root of 131292481 is about 508.2530011073.

The spelling of 131292481 in words is "one hundred thirty-one million, two hundred ninety-two thousand, four hundred eighty-one".