345002891 has 4 divisors (see below), whose sum is σ = 349729032. Its totient is φ = 340276752.

The previous prime is 345002887. The next prime is 345002897. The reversal of 345002891 is 198200543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198200543 = 4229 ⋅46867.

It is a cyclic number.

It is not a de Polignac number, because 345002891 - 2² = 345002887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345002897) 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, 2362961 + ... + 2363106.

It is an arithmetic number, because the mean of its divisors is an integer number (87432258).

Almost surely, 2^345002891 is an apocalyptic number.

345002891 is a deficient number, since it is larger than the sum of its proper divisors (4726141).

345002891 is an equidigital number, since it uses as much as digits as its factorization.

345002891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726140.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 345002891 is about 18574.2534439476. The cubic root of 345002891 is about 701.3598674032.

The spelling of 345002891 in words is "three hundred forty-five million, two thousand, eight hundred ninety-one".