68258231 has 4 divisors (see below), whose sum is σ = 68518032. Its totient is φ = 67998432.

The previous prime is 68258209. The next prime is 68258237. The reversal of 68258231 is 13285286.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68258231 is a prime.

It is a super-2 number, since 2×68258231² = 9318372198498722, 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 = 68258191 and 68258200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68258237) 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, 129506 + ... + 130031.

It is an arithmetic number, because the mean of its divisors is an integer number (17129508).

Almost surely, 2^68258231 is an apocalyptic number.

68258231 is a deficient number, since it is larger than the sum of its proper divisors (259801).

68258231 is a wasteful number, since it uses less digits than its factorization.

68258231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259800.

The product of its digits is 23040, while the sum is 35.

The square root of 68258231 is about 8261.8539686925. The cubic root of 68258231 is about 408.6815290546.

The spelling of 68258231 in words is "sixty-eight million, two hundred fifty-eight thousand, two hundred thirty-one".