131018863 has 2 divisors, whose sum is σ = 131018864. Its totient is φ = 131018862.

The previous prime is 131018843. The next prime is 131018869. The reversal of 131018863 is 368810131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131018863 - 2⁵ = 131018831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131018869) 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, 65509431 + 65509432.

It is an arithmetic number, because the mean of its divisors is an integer number (65509432).

Almost surely, 2^131018863 is an apocalyptic number.

131018863 is a deficient number, since it is larger than the sum of its proper divisors (1).

131018863 is an equidigital number, since it uses as much as digits as its factorization.

131018863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 131018863 is about 11446.3471465791. The cubic root of 131018863 is about 507.8996833658.

Adding to 131018863 its reverse (368810131), we get a palindrome (499828994).

The spelling of 131018863 in words is "one hundred thirty-one million, eighteen thousand, eight hundred sixty-three".