878131 has 2 divisors, whose sum is σ = 878132. Its totient is φ = 878130.

The previous prime is 878113. The next prime is 878147. The reversal of 878131 is 131878.

It is a happy number.

Together with previous prime (878113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878131 - 2⁵ = 878099 is a prime.

It is a super-2 number, since 2×878131² = 1542228106322, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 878131.

It is not a weakly prime, because it can be changed into another prime (878191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439065 + 439066.

It is an arithmetic number, because the mean of its divisors is an integer number (439066).

2⁸⁷⁸¹³¹ is an apocalyptic number.

878131 is a deficient number, since it is larger than the sum of its proper divisors (1).

878131 is an equidigital number, since it uses as much as digits as its factorization.

878131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 28.

The square root of 878131 is about 937.0864421173. The cubic root of 878131 is about 95.7605069060.

The spelling of 878131 in words is "eight hundred seventy-eight thousand, one hundred thirty-one".