343404341301021 has 64 divisors (see below), whose sum is σ = 641494762352640. Its totient is φ = 157509874621440.

The previous prime is 343404341300981. The next prime is 343404341301023. The reversal of 343404341301021 is 120103143404343.

It is not a de Polignac number, because 343404341301021 - 2⁹ = 343404341300509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343404341301023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2485882236 + ... + 2486020373.

It is an arithmetic number, because the mean of its divisors is an integer number (10023355661760).

Almost surely, 2^{343404341301021} is an apocalyptic number.

It is an amenable number.

343404341301021 is a deficient number, since it is larger than the sum of its proper divisors (298090421051619).

343404341301021 is a wasteful number, since it uses less digits than its factorization.

343404341301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971902666.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 343404341301021 its reverse (120103143404343), we get a palindrome (463507484705364).

The spelling of 343404341301021 in words is "three hundred forty-three trillion, four hundred four billion, three hundred forty-one million, three hundred one thousand, twenty-one".