343381018 has 4 divisors (see below), whose sum is σ = 515071530. Its totient is φ = 171690508.

The previous prime is 343381001. The next prime is 343381021. The reversal of 343381018 is 810183343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 810183343 = 71 ⋅11411033.

It can be written as a sum of positive squares in only one way, i.e., 223412809 + 119968209 = 14947^2 + 10953^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85845253 + ... + 85845256.

Almost surely, 2^343381018 is an apocalyptic number.

343381018 is a deficient number, since it is larger than the sum of its proper divisors (171690512).

343381018 is a wasteful number, since it uses less digits than its factorization.

343381018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171690511.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 343381018 is about 18530.5428414820. The cubic root of 343381018 is about 700.2591000025.

The spelling of 343381018 in words is "three hundred forty-three million, three hundred eighty-one thousand, eighteen".