131051731 has 2 divisors, whose sum is σ = 131051732. Its totient is φ = 131051730.

The previous prime is 131051707. The next prime is 131051773. The reversal of 131051731 is 137150131.

It is a weak prime.

It is an emirp because it is prime and its reverse (137150131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131051731 - 2¹¹ = 131049683 is a prime.

It is a super-2 number, since 2×131051731² = 34349112396192722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131051131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65525865 + 65525866.

It is an arithmetic number, because the mean of its divisors is an integer number (65525866).

Almost surely, 2^131051731 is an apocalyptic number.

131051731 is a deficient number, since it is larger than the sum of its proper divisors (1).

131051731 is an equidigital number, since it uses as much as digits as its factorization.

131051731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 131051731 is about 11447.7827984287. The cubic root of 131051731 is about 507.9421511720.

The spelling of 131051731 in words is "one hundred thirty-one million, fifty-one thousand, seven hundred thirty-one".