86340631 has 4 divisors (see below), whose sum is σ = 92982232. Its totient is φ = 79699032.

The previous prime is 86340619. The next prime is 86340679. The reversal of 86340631 is 13604368.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86340631 - 2¹¹ = 86338583 is a prime.

It is a super-2 number, since 2×86340631² = 14909409122956322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86340593 and 86340602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86340691) 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 in 3 ways as a sum of consecutive naturals, for example, 3320781 + ... + 3320806.

It is an arithmetic number, because the mean of its divisors is an integer number (23245558).

Almost surely, 2^86340631 is an apocalyptic number.

86340631 is a deficient number, since it is larger than the sum of its proper divisors (6641601).

86340631 is a wasteful number, since it uses less digits than its factorization.

86340631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6641600.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 86340631 is about 9291.9659383792. The cubic root of 86340631 is about 441.9824986416.

Adding to 86340631 its reverse (13604368), we get a palindrome (99944999).

It can be divided in two parts, 863406 and 31, that multiplied together give a triangular number (26765586 = T₇₃₁₆).

The spelling of 86340631 in words is "eighty-six million, three hundred forty thousand, six hundred thirty-one".