131136251 has 16 divisors (see below), whose sum is σ = 139565184. Its totient is φ = 123047424.

The previous prime is 131136211. The next prime is 131136259. The reversal of 131136251 is 152631131.

It is a cyclic number.

It is not a de Polignac number, because 131136251 - 2¹⁰ = 131135227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131136259) 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 in 15 ways as a sum of consecutive naturals, for example, 126431 + ... + 127463.

It is an arithmetic number, because the mean of its divisors is an integer number (8722824).

Almost surely, 2^131136251 is an apocalyptic number.

131136251 is a deficient number, since it is larger than the sum of its proper divisors (8428933).

131136251 is a wasteful number, since it uses less digits than its factorization.

131136251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190.

The product of its digits is 540, while the sum is 23.

The square root of 131136251 is about 11451.4737479505. The cubic root of 131136251 is about 508.0513244587.

Adding to 131136251 its reverse (152631131), we get a palindrome (283767382).

The spelling of 131136251 in words is "one hundred thirty-one million, one hundred thirty-six thousand, two hundred fifty-one".