343340431021021 has 32 divisors (see below), whose sum is σ = 416232574767360. Its totient is φ = 276472686468096.

The previous prime is 343340431020997. The next prime is 343340431021039. The reversal of 343340431021021 is 120120134043343.

It is a cyclic number.

It is not a de Polignac number, because 343340431021021 - 2¹⁹ = 343340430496733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343340431021051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2059263166 + ... + 2059429888.

It is an arithmetic number, because the mean of its divisors is an integer number (13007267961480).

Almost surely, 2^{343340431021021} is an apocalyptic number.

It is an amenable number.

343340431021021 is a deficient number, since it is larger than the sum of its proper divisors (72892143746339).

343340431021021 is a wasteful number, since it uses less digits than its factorization.

343340431021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198373.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 343340431021021 its reverse (120120134043343), we get a palindrome (463460565064364).

The spelling of 343340431021021 in words is "three hundred forty-three trillion, three hundred forty billion, four hundred thirty-one million, twenty-one thousand, twenty-one".