345341881 has 4 divisors (see below), whose sum is σ = 346655232. Its totient is φ = 344028532.

The previous prime is 345341873. The next prime is 345341897. The reversal of 345341881 is 188143543.

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, and also an emirpimes, since its reverse is a distinct semiprime: 188143543 = 7 ⋅26877649.

It is a cyclic number.

It is not a de Polignac number, because 345341881 - 2³ = 345341873 is a prime.

It is a super-2 number, since 2×345341881² = 238522029545236322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345341881.

It is not an unprimeable number, because it can be changed into a prime (345341861) 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, 656281 + ... + 656806.

It is an arithmetic number, because the mean of its divisors is an integer number (86663808).

Almost surely, 2^345341881 is an apocalyptic number.

It is an amenable number.

345341881 is a deficient number, since it is larger than the sum of its proper divisors (1313351).

345341881 is a wasteful number, since it uses less digits than its factorization.

345341881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313350.

The product of its digits is 46080, while the sum is 37.

The square root of 345341881 is about 18583.3764693072. The cubic root of 345341881 is about 701.5895042748.

The spelling of 345341881 in words is "three hundred forty-five million, three hundred forty-one thousand, eight hundred eighty-one".