345512393 has 2 divisors, whose sum is σ = 345512394. Its totient is φ = 345512392.

The previous prime is 345512347. The next prime is 345512449. The reversal of 345512393 is 393215543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257377849 + 88134544 = 16043^2 + 9388^2 .

It is a cyclic number.

It is not a de Polignac number, because 345512393 - 2⁸ = 345512137 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (345512333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172756196 + 172756197.

It is an arithmetic number, because the mean of its divisors is an integer number (172756197).

Almost surely, 2^345512393 is an apocalyptic number.

It is an amenable number.

345512393 is a deficient number, since it is larger than the sum of its proper divisors (1).

345512393 is an equidigital number, since it uses as much as digits as its factorization.

345512393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 35.

The square root of 345512393 is about 18587.9636593146. The cubic root of 345512393 is about 701.7049548400.

The spelling of 345512393 in words is "three hundred forty-five million, five hundred twelve thousand, three hundred ninety-three".