340021021031343 has 20 divisors (see below), whose sum is σ = 508619960716120. Its totient is φ = 226373940890352.

The previous prime is 340021021031311. The next prime is 340021021031441. The reversal of 340021021031343 is 343130120120043.

It is a happy number.

340021021031343 is a `hidden beast` number, since 3 + 4 + 0 + 0 + 210 + 2 + 103 + 1 + 343 = 666.

It is not a de Polignac number, because 340021021031343 - 2⁵ = 340021021031311 is a prime.

It is a super-2 number, since 2×340021021031343² (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 Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340021021031143) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2840123080 + ... + 2840242797.

It is an arithmetic number, because the mean of its divisors is an integer number (25430998035806).

Almost surely, 2^{340021021031343} is an apocalyptic number.

340021021031343 is a deficient number, since it is larger than the sum of its proper divisors (168598939684777).

340021021031343 is an equidigital number, since it uses as much as digits as its factorization.

340021021031343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5680366628 (or 5680366619 counting only the distinct ones).

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

Adding to 340021021031343 its reverse (343130120120043), we get a palindrome (683151141151386).

The spelling of 340021021031343 in words is "three hundred forty trillion, twenty-one billion, twenty-one million, thirty-one thousand, three hundred forty-three".