345985381 has 8 divisors (see below), whose sum is σ = 402114240. Its totient is φ = 291532128.

The previous prime is 345985357. The next prime is 345985391. The reversal of 345985381 is 183589543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345985381 - 2¹¹ = 345983333 is a prime.

It is a super-2 number, since 2×345985381² = 239411767731430322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345985391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418456 + ... + 419281.

It is an arithmetic number, because the mean of its divisors is an integer number (50264280).

Almost surely, 2^345985381 is an apocalyptic number.

It is an amenable number.

345985381 is a deficient number, since it is larger than the sum of its proper divisors (56128859).

345985381 is an equidigital number, since it uses as much as digits as its factorization.

345985381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837803.

The product of its digits is 518400, while the sum is 46.

The square root of 345985381 is about 18600.6822724329. The cubic root of 345985381 is about 702.0250076994.

The spelling of 345985381 in words is "three hundred forty-five million, nine hundred eighty-five thousand, three hundred eighty-one".