867672131 has 2 divisors, whose sum is σ = 867672132. Its totient is φ = 867672130.

The previous prime is 867672121. The next prime is 867672133. The reversal of 867672131 is 131276768.

867672131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-867672131 is a prime.

It is a super-2 number, since 2×867672131² = 1505709853828162322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 867672133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (867672133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433836065 + 433836066.

It is an arithmetic number, because the mean of its divisors is an integer number (433836066).

Almost surely, 2^867672131 is an apocalyptic number.

867672131 is a deficient number, since it is larger than the sum of its proper divisors (1).

867672131 is an equidigital number, since it uses as much as digits as its factorization.

867672131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 867672131 is about 29456.2749002653. The cubic root of 867672131 is about 953.7880630807.

The spelling of 867672131 in words is "eight hundred sixty-seven million, six hundred seventy-two thousand, one hundred thirty-one".