131896507 has 2 divisors, whose sum is σ = 131896508. Its totient is φ = 131896506.

The previous prime is 131896493. The next prime is 131896529. The reversal of 131896507 is 705698131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131896507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131896507.

It is not a weakly prime, because it can be changed into another prime (131896577) 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, 65948253 + 65948254.

It is an arithmetic number, because the mean of its divisors is an integer number (65948254).

Almost surely, 2^131896507 is an apocalyptic number.

131896507 is a deficient number, since it is larger than the sum of its proper divisors (1).

131896507 is an equidigital number, since it uses as much as digits as its factorization.

131896507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 131896507 is about 11484.6204552001. The cubic root of 131896507 is about 509.0312341318.

The spelling of 131896507 in words is "one hundred thirty-one million, eight hundred ninety-six thousand, five hundred seven".