345245881 has 4 divisors (see below), whose sum is σ = 346157200. Its totient is φ = 344334564.

The previous prime is 345245821. The next prime is 345245897. The reversal of 345245881 is 188542543.

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 a de Polignac number, because none of the positive numbers 2^k-345245881 is a prime.

It is a super-2 number, since 2×345245881² = 238389436694932322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345245821) 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 in 3 ways as a sum of consecutive naturals, for example, 455091 + ... + 455848.

It is an arithmetic number, because the mean of its divisors is an integer number (86539300).

Almost surely, 2^345245881 is an apocalyptic number.

It is an amenable number.

345245881 is a deficient number, since it is larger than the sum of its proper divisors (911319).

345245881 is an equidigital number, since it uses as much as digits as its factorization.

345245881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911318.

The product of its digits is 153600, while the sum is 40.

The square root of 345245881 is about 18580.7933361307. The cubic root of 345245881 is about 701.5244877042.

The spelling of 345245881 in words is "three hundred forty-five million, two hundred forty-five thousand, eight hundred eighty-one".