343833981 has 4 divisors (see below), whose sum is σ = 458445312. Its totient is φ = 229222652.

The previous prime is 343833961. The next prime is 343834009. The reversal of 343833981 is 189338343.

It is a happy number.

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 not a de Polignac number, because 343833981 - 2¹¹ = 343831933 is a prime.

It is a super-2 number, since 2×343833981² = 236443612980616722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343833961) 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, 57305661 + ... + 57305666.

It is an arithmetic number, because the mean of its divisors is an integer number (114611328).

Almost surely, 2^343833981 is an apocalyptic number.

It is an amenable number.

343833981 is a deficient number, since it is larger than the sum of its proper divisors (114611331).

343833981 is a wasteful number, since it uses less digits than its factorization.

343833981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114611330.

The product of its digits is 186624, while the sum is 42.

The square root of 343833981 is about 18542.7608785747. The cubic root of 343833981 is about 700.5668748224.

The spelling of 343833981 in words is "three hundred forty-three million, eight hundred thirty-three thousand, nine hundred eighty-one".