345371217 has 32 divisors (see below), whose sum is σ = 486936576. Its totient is φ = 217464000.

The previous prime is 345371171. The next prime is 345371239. The reversal of 345371217 is 712173543.

It is not a de Polignac number, because 345371217 - 2⁶ = 345371153 is a prime.

It is a super-2 number, since 2×345371217² = 238562555064122178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345371287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779398 + ... + 779840.

It is an arithmetic number, because the mean of its divisors is an integer number (15216768).

Almost surely, 2^345371217 is an apocalyptic number.

It is an amenable number.

345371217 is a deficient number, since it is larger than the sum of its proper divisors (141565359).

345371217 is a wasteful number, since it uses less digits than its factorization.

345371217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661.

The product of its digits is 17640, while the sum is 33.

The square root of 345371217 is about 18584.1657601303. The cubic root of 345371217 is about 701.6093698516.

The spelling of 345371217 in words is "three hundred forty-five million, three hundred seventy-one thousand, two hundred seventeen".