19743034311 has 128 divisors (see below), whose sum is σ = 41339289600. Its totient is φ = 8968682880.

The previous prime is 19743034307. The next prime is 19743034321. The reversal of 19743034311 is 11343034791.

It is a happy number.

19743034311 is a `hidden beast` number, since 197 + 4 + 30 + 3 + 431 + 1 = 666.

It is not a de Polignac number, because 19743034311 - 2² = 19743034307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19743034321) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 494290 + ... + 532736.

It is an arithmetic number, because the mean of its divisors is an integer number (322963200).

Almost surely, 2^19743034311 is an apocalyptic number.

19743034311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

19743034311 is an abundant number, since it is smaller than the sum of its proper divisors (21596255289).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19743034311 is a wasteful number, since it uses less digits than its factorization.

19743034311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38506 (or 38500 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 19743034311 in words is "nineteen billion, seven hundred forty-three million, thirty-four thousand, three hundred eleven".