68097431 has 2 divisors, whose sum is σ = 68097432. Its totient is φ = 68097430.

The previous prime is 68097413. The next prime is 68097437. The reversal of 68097431 is 13479086.

Together with previous prime (68097413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68097431 is a prime.

It is a super-2 number, since 2×68097431² = 9274520217599522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68097437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34048715 + 34048716.

It is an arithmetic number, because the mean of its divisors is an integer number (34048716).

Almost surely, 2^68097431 is an apocalyptic number.

68097431 is a deficient number, since it is larger than the sum of its proper divisors (1).

68097431 is an equidigital number, since it uses as much as digits as its factorization.

68097431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 68097431 is about 8252.1167587474. The cubic root of 68097431 is about 408.3603582095.

The spelling of 68097431 in words is "sixty-eight million, ninety-seven thousand, four hundred thirty-one".