131262251 has 2 divisors, whose sum is σ = 131262252. Its totient is φ = 131262250.

The previous prime is 131262233. The next prime is 131262281. The reversal of 131262251 is 152262131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131262251 - 2¹⁴ = 131245867 is a prime.

It is not a weakly prime, because it can be changed into another prime (131262281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65631125 + 65631126.

It is an arithmetic number, because the mean of its divisors is an integer number (65631126).

Almost surely, 2^131262251 is an apocalyptic number.

131262251 is a deficient number, since it is larger than the sum of its proper divisors (1).

131262251 is an equidigital number, since it uses as much as digits as its factorization.

131262251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 131262251 is about 11456.9739023880. The cubic root of 131262251 is about 508.2139898161.

The spelling of 131262251 in words is "one hundred thirty-one million, two hundred sixty-two thousand, two hundred fifty-one".