86403131 has 2 divisors, whose sum is σ = 86403132. Its totient is φ = 86403130.

The previous prime is 86403067. The next prime is 86403139. The reversal of 86403131 is 13130468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86403131 - 2⁶ = 86403067 is a prime.

It is a super-2 number, since 2×86403131² = 14931002093206322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86403131.

It is not a weakly prime, because it can be changed into another prime (86403139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43201565 + 43201566.

It is an arithmetic number, because the mean of its divisors is an integer number (43201566).

Almost surely, 2^86403131 is an apocalyptic number.

86403131 is a deficient number, since it is larger than the sum of its proper divisors (1).

86403131 is an equidigital number, since it uses as much as digits as its factorization.

86403131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 86403131 is about 9295.3284503561. The cubic root of 86403131 is about 442.0891199124.

Adding to 86403131 its reverse (13130468), we get a palindrome (99533599).

The spelling of 86403131 in words is "eighty-six million, four hundred three thousand, one hundred thirty-one".