68400314231 has 2 divisors, whose sum is σ = 68400314232. Its totient is φ = 68400314230.

The previous prime is 68400314207. The next prime is 68400314233. The reversal of 68400314231 is 13241300486.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68400314231 is a prime.

It is a super-2 number, since 2×68400314231² (a number of 22 digits) contains 22 as substring.

Together with 68400314233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68400314233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34200157115 + 34200157116.

It is an arithmetic number, because the mean of its divisors is an integer number (34200157116).

Almost surely, 2^68400314231 is an apocalyptic number.

68400314231 is a deficient number, since it is larger than the sum of its proper divisors (1).

68400314231 is an equidigital number, since it uses as much as digits as its factorization.

68400314231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 68400314231 in words is "sixty-eight billion, four hundred million, three hundred fourteen thousand, two hundred thirty-one".