67131389 has 8 divisors (see below), whose sum is σ = 76100640. Its totient is φ = 58705776.

The previous prime is 67131377. The next prime is 67131401. The reversal of 67131389 is 98313176.

It is an interprime number because it is at equal distance from previous prime (67131377) and next prime (67131401).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67131389 - 2⁴ = 67131373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67131329) 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 7 ways as a sum of consecutive naturals, for example, 135647 + ... + 136140.

It is an arithmetic number, because the mean of its divisors is an integer number (9512580).

Almost surely, 2^67131389 is an apocalyptic number.

It is an amenable number.

67131389 is a deficient number, since it is larger than the sum of its proper divisors (8969251).

67131389 is a wasteful number, since it uses less digits than its factorization.

67131389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271819.

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

The square root of 67131389 is about 8193.3747015500. The cubic root of 67131389 is about 406.4201305884.

The spelling of 67131389 in words is "sixty-seven million, one hundred thirty-one thousand, three hundred eighty-nine".