345668831 has 2 divisors, whose sum is σ = 345668832. Its totient is φ = 345668830.

The previous prime is 345668773. The next prime is 345668833. The reversal of 345668831 is 138866543.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345668831 is a prime.

It is a super-3 number, since 3×345668831³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 345668833, 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 (345668833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172834415 + 172834416.

It is an arithmetic number, because the mean of its divisors is an integer number (172834416).

Almost surely, 2^345668831 is an apocalyptic number.

345668831 is a deficient number, since it is larger than the sum of its proper divisors (1).

345668831 is an equidigital number, since it uses as much as digits as its factorization.

345668831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 44.

The square root of 345668831 is about 18592.1712287726. The cubic root of 345668831 is about 701.8108427509.

The spelling of 345668831 in words is "three hundred forty-five million, six hundred sixty-eight thousand, eight hundred thirty-one".