345181 has 2 divisors, whose sum is σ = 345182. Its totient is φ = 345180.

The previous prime is 345143. The next prime is 345193. The reversal of 345181 is 181543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285156 + 60025 = 534^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 345181 - 2¹³ = 336989 is a prime.

It is a super-2 number, since 2×345181² = 238299845522, which contains 22 as substring.

It is a Chen prime.

345181 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172590 + 172591.

It is an arithmetic number, because the mean of its divisors is an integer number (172591).

2³⁴⁵¹⁸¹ is an apocalyptic number.

It is an amenable number.

345181 is a deficient number, since it is larger than the sum of its proper divisors (1).

345181 is an equidigital number, since it uses as much as digits as its factorization.

345181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 22.

The square root of 345181 is about 587.5210634522. The cubic root of 345181 is about 70.1480539836.

The spelling of 345181 in words is "three hundred forty-five thousand, one hundred eighty-one".