210131137 has 2 divisors, whose sum is σ = 210131138. Its totient is φ = 210131136.

The previous prime is 210131123. The next prime is 210131149. The reversal of 210131137 is 731131012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207388801 + 2742336 = 14401^2 + 1656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210131137 is a prime.

It is not a weakly prime, because it can be changed into another prime (210131737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105065568 + 105065569.

It is an arithmetic number, because the mean of its divisors is an integer number (105065569).

Almost surely, 2^210131137 is an apocalyptic number.

It is an amenable number.

210131137 is a deficient number, since it is larger than the sum of its proper divisors (1).

210131137 is an equidigital number, since it uses as much as digits as its factorization.

210131137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 210131137 is about 14495.9006964038. The cubic root of 210131137 is about 594.5158946255.

Adding to 210131137 its reverse (731131012), we get a palindrome (941262149).

The spelling of 210131137 in words is "two hundred ten million, one hundred thirty-one thousand, one hundred thirty-seven".