345387197 has 2 divisors, whose sum is σ = 345387198. Its totient is φ = 345387196.

The previous prime is 345387143. The next prime is 345387199. The reversal of 345387197 is 791783543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269156836 + 76230361 = 16406^2 + 8731^2 .

It is an emirp because it is prime and its reverse (791783543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345387197 - 2¹⁶ = 345321661 is a prime.

Together with 345387199, 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 (345387199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172693598 + 172693599.

It is an arithmetic number, because the mean of its divisors is an integer number (172693599).

Almost surely, 2^345387197 is an apocalyptic number.

It is an amenable number.

345387197 is a deficient number, since it is larger than the sum of its proper divisors (1).

345387197 is an equidigital number, since it uses as much as digits as its factorization.

345387197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 345387197 is about 18584.5956910555. The cubic root of 345387197 is about 701.6201906190.

The spelling of 345387197 in words is "three hundred forty-five million, three hundred eighty-seven thousand, one hundred ninety-seven".