867131 has 2 divisors, whose sum is σ = 867132. Its totient is φ = 867130.

The previous prime is 867121. The next prime is 867143. The reversal of 867131 is 131768.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 867131 - 2⁶ = 867067 is a prime.

It is a super-2 number, since 2×867131² = 1503832342322, 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 867131.

It is not a weakly prime, because it can be changed into another prime (867121) 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, 433565 + 433566.

It is an arithmetic number, because the mean of its divisors is an integer number (433566).

2⁸⁶⁷¹³¹ is an apocalyptic number.

867131 is a deficient number, since it is larger than the sum of its proper divisors (1).

867131 is an equidigital number, since it uses as much as digits as its factorization.

867131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 867131 is about 931.1986898616. The cubic root of 867131 is about 95.3589742539.

Adding to 867131 its reverse (131768), we get a palindrome (998899).

The spelling of 867131 in words is "eight hundred sixty-seven thousand, one hundred thirty-one".