200131387 has 2 divisors, whose sum is σ = 200131388. Its totient is φ = 200131386.

The previous prime is 200131289. The next prime is 200131391. The reversal of 200131387 is 783131002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200131387 is a prime.

It is not a weakly prime, because it can be changed into another prime (200131787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100065693 + 100065694.

It is an arithmetic number, because the mean of its divisors is an integer number (100065694).

Almost surely, 2^200131387 is an apocalyptic number.

200131387 is a deficient number, since it is larger than the sum of its proper divisors (1).

200131387 is an equidigital number, since it uses as much as digits as its factorization.

200131387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 200131387 is about 14146.7800930106. The cubic root of 200131387 is about 584.9315789168.

Adding to 200131387 its reverse (783131002), we get a palindrome (983262389).

The spelling of 200131387 in words is "two hundred million, one hundred thirty-one thousand, three hundred eighty-seven".