345381 has 4 divisors (see below), whose sum is σ = 460512. Its totient is φ = 230252.

The previous prime is 345379. The next prime is 345413. The reversal of 345381 is 183543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 345381 - 2¹ = 345379 is a prime.

It is a super-2 number, since 2×345381² = 238576070322, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 345381.

It is not an unprimeable number, because it can be changed into a prime (345311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57561 + ... + 57566.

It is an arithmetic number, because the mean of its divisors is an integer number (115128).

2³⁴⁵³⁸¹ is an apocalyptic number.

It is an amenable number.

345381 is a deficient number, since it is larger than the sum of its proper divisors (115131).

345381 is a wasteful number, since it uses less digits than its factorization.

345381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115130.

The product of its digits is 1440, while the sum is 24.

The square root of 345381 is about 587.6912454682. The cubic root of 345381 is about 70.1615994395.

The spelling of 345381 in words is "three hundred forty-five thousand, three hundred eighty-one".