345512227 has 2 divisors, whose sum is σ = 345512228. Its totient is φ = 345512226.

The previous prime is 345512221. The next prime is 345512239. The reversal of 345512227 is 722215543.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345512227 is a prime.

It is not a weakly prime, because it can be changed into another prime (345512221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172756113 + 172756114.

It is an arithmetic number, because the mean of its divisors is an integer number (172756114).

Almost surely, 2^345512227 is an apocalyptic number.

345512227 is a deficient number, since it is larger than the sum of its proper divisors (1).

345512227 is an equidigital number, since it uses as much as digits as its factorization.

345512227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 31.

The square root of 345512227 is about 18587.9591940589. The cubic root of 345512227 is about 701.7048424629.

The spelling of 345512227 in words is "three hundred forty-five million, five hundred twelve thousand, two hundred twenty-seven".