345173407 has 4 divisors (see below), whose sum is σ = 354502456. Its totient is φ = 335844360.

The previous prime is 345173401. The next prime is 345173429. The reversal of 345173407 is 704371543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345173407 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 (345173401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4664469 + ... + 4664542.

It is an arithmetic number, because the mean of its divisors is an integer number (88625614).

Almost surely, 2^345173407 is an apocalyptic number.

345173407 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

345173407 is the 10727-th hex number.

345173407 is a deficient number, since it is larger than the sum of its proper divisors (9329049).

345173407 is an equidigital number, since it uses as much as digits as its factorization.

345173407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329048.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 345173407 is about 18578.8429941156. The cubic root of 345173407 is about 701.4753962725.

The spelling of 345173407 in words is "three hundred forty-five million, one hundred seventy-three thousand, four hundred seven".