345840293 has 4 divisors (see below), whose sum is σ = 351509868. Its totient is φ = 340170720.

The previous prime is 345840281. The next prime is 345840301. The reversal of 345840293 is 392048543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 392048543 = 17 ⋅23061679.

It can be written as a sum of positive squares in 2 ways, for example, as 28751044 + 317089249 = 5362^2 + 17807^2 .

It is a cyclic number.

It is not a de Polignac number, because 345840293 - 2⁴ = 345840277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345840233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2834696 + ... + 2834817.

It is an arithmetic number, because the mean of its divisors is an integer number (87877467).

Almost surely, 2^345840293 is an apocalyptic number.

It is an amenable number.

345840293 is a deficient number, since it is larger than the sum of its proper divisors (5669575).

345840293 is an equidigital number, since it uses as much as digits as its factorization.

345840293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669574.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 345840293 is about 18596.7817914821. The cubic root of 345840293 is about 701.9268632394.

The spelling of 345840293 in words is "three hundred forty-five million, eight hundred forty thousand, two hundred ninety-three".