340344343021 has 8 divisors (see below), whose sum is σ = 358262962400. Its totient is φ = 322426299600.

The previous prime is 340344343019. The next prime is 340344343061. The reversal of 340344343021 is 120343443043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340344343021 - 2¹ = 340344343019 is a prime.

It is a super-2 number, since 2×340344343021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340344343061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1628590 + ... + 1825648.

It is an arithmetic number, because the mean of its divisors is an integer number (44782870300).

Almost surely, 2^340344343021 is an apocalyptic number.

It is an amenable number.

340344343021 is a deficient number, since it is larger than the sum of its proper divisors (17918619379).

340344343021 is a wasteful number, since it uses less digits than its factorization.

340344343021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287979.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 340344343021 its reverse (120343443043), we get a palindrome (460687786064).

The spelling of 340344343021 in words is "three hundred forty billion, three hundred forty-four million, three hundred forty-three thousand, twenty-one".