340203891 has 8 divisors (see below), whose sum is σ = 453725440. Its totient is φ = 226742472.

The previous prime is 340203887. The next prime is 340203943. The reversal of 340203891 is 198302043.

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

It is not a de Polignac number, because 340203891 - 2² = 340203887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340203811) 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, 450 + ... + 26088.

It is an arithmetic number, because the mean of its divisors is an integer number (56715680).

Almost surely, 2^340203891 is an apocalyptic number.

340203891 is a deficient number, since it is larger than the sum of its proper divisors (113521549).

340203891 is a wasteful number, since it uses less digits than its factorization.

340203891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30065.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 340203891 is about 18444.6168569586. The cubic root of 340203891 is about 698.0926928676.

The spelling of 340203891 in words is "three hundred forty million, two hundred three thousand, eight hundred ninety-one".