67871231 has 4 divisors (see below), whose sum is σ = 68389464. Its totient is φ = 67353000.

The previous prime is 67871227. The next prime is 67871261. The reversal of 67871231 is 13217876.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67871231 - 2² = 67871227 is a prime.

It is a super-2 number, since 2×67871231² = 9213007994910722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67871191 and 67871200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67871261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258920 + ... + 259181.

It is an arithmetic number, because the mean of its divisors is an integer number (17097366).

Almost surely, 2^67871231 is an apocalyptic number.

67871231 is a deficient number, since it is larger than the sum of its proper divisors (518233).

67871231 is a wasteful number, since it uses less digits than its factorization.

67871231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518232.

The product of its digits is 14112, while the sum is 35.

The square root of 67871231 is about 8238.3997839386. The cubic root of 67871231 is about 407.9077049178.

The spelling of 67871231 in words is "sixty-seven million, eight hundred seventy-one thousand, two hundred thirty-one".