68581231 has 8 divisors (see below), whose sum is σ = 69459264. Its totient is φ = 67706880.

The previous prime is 68581229. The next prime is 68581283. The reversal of 68581231 is 13218586.

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 68581231 - 2¹ = 68581229 is a prime.

It is a super-2 number, since 2×68581231² = 9406770490950722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68581291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61626 + ... + 62728.

It is an arithmetic number, because the mean of its divisors is an integer number (8682408).

Almost surely, 2^68581231 is an apocalyptic number.

68581231 is a deficient number, since it is larger than the sum of its proper divisors (878033).

68581231 is a wasteful number, since it uses less digits than its factorization.

68581231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841.

The product of its digits is 11520, while the sum is 34.

The square root of 68581231 is about 8281.3785688133. The cubic root of 68581231 is about 409.3251460064.

The spelling of 68581231 in words is "sixty-eight million, five hundred eighty-one thousand, two hundred thirty-one".