67839131 has 2 divisors, whose sum is σ = 67839132. Its totient is φ = 67839130.

The previous prime is 67839127. The next prime is 67839193. The reversal of 67839131 is 13193876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67839131 - 2² = 67839127 is a prime.

It is a super-2 number, since 2×67839131² = 9204295389670322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67839731) 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, 33919565 + 33919566.

It is an arithmetic number, because the mean of its divisors is an integer number (33919566).

Almost surely, 2^67839131 is an apocalyptic number.

67839131 is a deficient number, since it is larger than the sum of its proper divisors (1).

67839131 is an equidigital number, since it uses as much as digits as its factorization.

67839131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 67839131 is about 8236.4513596573. The cubic root of 67839131 is about 407.8433875237.

The spelling of 67839131 in words is "sixty-seven million, eight hundred thirty-nine thousand, one hundred thirty-one".