345511393 has 2 divisors, whose sum is σ = 345511394. Its totient is φ = 345511392.

The previous prime is 345511391. The next prime is 345511427. The reversal of 345511393 is 393115543.

It is a happy number.

It is an a-pointer prime, because the next prime (345511427) can be obtained adding 345511393 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229583104 + 115928289 = 15152^2 + 10767^2 .

It is a cyclic number.

It is not a de Polignac number, because 345511393 - 2¹ = 345511391 is a prime.

Together with 345511391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (345511391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172755696 + 172755697.

It is an arithmetic number, because the mean of its divisors is an integer number (172755697).

Almost surely, 2^345511393 is an apocalyptic number.

It is an amenable number.

345511393 is a deficient number, since it is larger than the sum of its proper divisors (1).

345511393 is an equidigital number, since it uses as much as digits as its factorization.

345511393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 34.

The square root of 345511393 is about 18587.9367601679. The cubic root of 345511393 is about 701.7042778690.

The spelling of 345511393 in words is "three hundred forty-five million, five hundred eleven thousand, three hundred ninety-three".