131118587 has 2 divisors, whose sum is σ = 131118588. Its totient is φ = 131118586.

The previous prime is 131118557. The next prime is 131118593. The reversal of 131118587 is 785811131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131118587 - 2⁶ = 131118523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131118527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65559293 + 65559294.

It is an arithmetic number, because the mean of its divisors is an integer number (65559294).

Almost surely, 2^131118587 is an apocalyptic number.

131118587 is a deficient number, since it is larger than the sum of its proper divisors (1).

131118587 is an equidigital number, since it uses as much as digits as its factorization.

131118587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 35.

The square root of 131118587 is about 11450.7024675345. The cubic root of 131118587 is about 508.0285119984.

The spelling of 131118587 in words is "one hundred thirty-one million, one hundred eighteen thousand, five hundred eighty-seven".