20430211343311 has 64 divisors (see below), whose sum is σ = 26282386944000. Its totient is φ = 15742189663200.

The previous prime is 20430211343261. The next prime is 20430211343327. The reversal of 20430211343311 is 11334311203402.

It is not a de Polignac number, because 20430211343311 - 2⁷ = 20430211343183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20430211343311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430211343111) 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, 139803400 + ... + 139949458.

It is an arithmetic number, because the mean of its divisors is an integer number (410662296000).

Almost surely, 2^{20430211343311} is an apocalyptic number.

20430211343311 is a deficient number, since it is larger than the sum of its proper divisors (5852175600689).

20430211343311 is a wasteful number, since it uses less digits than its factorization.

20430211343311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146505 (or 146491 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 20430211343311 its reverse (11334311203402), we get a palindrome (31764522546713).

The spelling of 20430211343311 in words is "twenty trillion, four hundred thirty billion, two hundred eleven million, three hundred forty-three thousand, three hundred eleven".