131030587 has 2 divisors, whose sum is σ = 131030588. Its totient is φ = 131030586.

The previous prime is 131030569. The next prime is 131030597. The reversal of 131030587 is 785030131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131030587 is a prime.

It is not a weakly prime, because it can be changed into another prime (131030507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515293 + 65515294.

It is an arithmetic number, because the mean of its divisors is an integer number (65515294).

Almost surely, 2^131030587 is an apocalyptic number.

131030587 is a deficient number, since it is larger than the sum of its proper divisors (1).

131030587 is an equidigital number, since it uses as much as digits as its factorization.

131030587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 131030587 is about 11446.8592635709. The cubic root of 131030587 is about 507.9148324269.

The spelling of 131030587 in words is "one hundred thirty-one million, thirty thousand, five hundred eighty-seven".