68120231 has 2 divisors, whose sum is σ = 68120232. Its totient is φ = 68120230.

The previous prime is 68120209. The next prime is 68120243. The reversal of 68120231 is 13202186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68120231 - 2⁶ = 68120167 is a prime.

It is a super-2 number, since 2×68120231² = 9280731742986722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68120197 and 68120206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68120251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34060115 + 34060116.

It is an arithmetic number, because the mean of its divisors is an integer number (34060116).

Almost surely, 2^68120231 is an apocalyptic number.

68120231 is a deficient number, since it is larger than the sum of its proper divisors (1).

68120231 is an equidigital number, since it uses as much as digits as its factorization.

68120231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 68120231 is about 8253.4981068635. The cubic root of 68120231 is about 408.4059280992.

The spelling of 68120231 in words is "sixty-eight million, one hundred twenty thousand, two hundred thirty-one".