345171331 has 2 divisors, whose sum is σ = 345171332. Its totient is φ = 345171330.

The previous prime is 345171317. The next prime is 345171361. The reversal of 345171331 is 133171543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345171331 - 2¹⁷ = 345040259 is a prime.

It is a super-2 number, since 2×345171331² = 238286495488623122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 345171331.

It is not a weakly prime, because it can be changed into another prime (345171361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172585665 + 172585666.

It is an arithmetic number, because the mean of its divisors is an integer number (172585666).

Almost surely, 2^345171331 is an apocalyptic number.

345171331 is a deficient number, since it is larger than the sum of its proper divisors (1).

345171331 is an equidigital number, since it uses as much as digits as its factorization.

345171331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 28.

The square root of 345171331 is about 18578.7871240294. The cubic root of 345171331 is about 701.4739899593.

The spelling of 345171331 in words is "three hundred forty-five million, one hundred seventy-one thousand, three hundred thirty-one".