340210343301021 has 32 divisors (see below), whose sum is σ = 530545119868800. Its totient is φ = 214868607465600.

The previous prime is 340210343301011. The next prime is 340210343301047. The reversal of 340210343301021 is 120103343012043.

It is a happy number.

340210343301021 is a `hidden beast` number, since 3 + 4 + 0 + 2 + 10 + 343 + 301 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 340210343301021 - 2²¹ = 340210341203869 is a prime.

It is a super-2 number, since 2×340210343301021² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340210343301011) 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, 107096671 + ... + 110227571.

It is an arithmetic number, because the mean of its divisors is an integer number (16579534995900).

Almost surely, 2^{340210343301021} is an apocalyptic number.

It is an amenable number.

340210343301021 is a deficient number, since it is larger than the sum of its proper divisors (190334776567779).

340210343301021 is a wasteful number, since it uses less digits than its factorization.

340210343301021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342746 (or 3342740 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 340210343301021 its reverse (120103343012043), we get a palindrome (460313686313064).

The spelling of 340210343301021 in words is "three hundred forty trillion, two hundred ten billion, three hundred forty-three million, three hundred one thousand, twenty-one".