68244331 has 2 divisors, whose sum is σ = 68244332. Its totient is φ = 68244330.

The previous prime is 68244313. The next prime is 68244359. The reversal of 68244331 is 13344286.

Together with previous prime (68244313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68244331 is a prime.

It is a super-2 number, since 2×68244331² = 9314577427275122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68244293 and 68244302.

It is not a weakly prime, because it can be changed into another prime (68244031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34122165 + 34122166.

It is an arithmetic number, because the mean of its divisors is an integer number (34122166).

Almost surely, 2^68244331 is an apocalyptic number.

68244331 is a deficient number, since it is larger than the sum of its proper divisors (1).

68244331 is an equidigital number, since it uses as much as digits as its factorization.

68244331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

The square root of 68244331 is about 8261.0127103158. The cubic root of 68244331 is about 408.6537860811.

The spelling of 68244331 in words is "sixty-eight million, two hundred forty-four thousand, three hundred thirty-one".