343983021 has 4 divisors (see below), whose sum is σ = 458644032. Its totient is φ = 229322012.

The previous prime is 343982971. The next prime is 343983061. The reversal of 343983021 is 120389343.

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 343983021 - 2⁶ = 343982957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343983061) 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, 57330501 + ... + 57330506.

It is an arithmetic number, because the mean of its divisors is an integer number (114661008).

Almost surely, 2^343983021 is an apocalyptic number.

It is an amenable number.

343983021 is a deficient number, since it is larger than the sum of its proper divisors (114661011).

343983021 is a wasteful number, since it uses less digits than its factorization.

343983021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114661010.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 343983021 is about 18546.7792621792. The cubic root of 343983021 is about 700.6680839428.

The spelling of 343983021 in words is "three hundred forty-three million, nine hundred eighty-three thousand, twenty-one".