131208751 has 2 divisors, whose sum is σ = 131208752. Its totient is φ = 131208750.

The previous prime is 131208689. The next prime is 131208757. The reversal of 131208751 is 157802131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131208751 - 2⁹ = 131208239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131208757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65604375 + 65604376.

It is an arithmetic number, because the mean of its divisors is an integer number (65604376).

Almost surely, 2^131208751 is an apocalyptic number.

131208751 is a deficient number, since it is larger than the sum of its proper divisors (1).

131208751 is an equidigital number, since it uses as much as digits as its factorization.

131208751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 131208751 is about 11454.6388419714. The cubic root of 131208751 is about 508.1449343107.

The spelling of 131208751 in words is "one hundred thirty-one million, two hundred eight thousand, seven hundred fifty-one".