1720142347311 has 12 divisors (see below), whose sum is σ = 2531530247688. Its totient is φ = 1125124553904.

The previous prime is 1720142347291. The next prime is 1720142347321. The reversal of 1720142347311 is 1137432410271.

1720142347311 is a `hidden beast` number, since 17 + 20 + 142 + 3 + 473 + 11 = 666.

It is not a de Polignac number, because 1720142347311 - 2¹⁵ = 1720142314543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720142347321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1803083745 + ... + 1803084698.

It is an arithmetic number, because the mean of its divisors is an integer number (210960853974).

Almost surely, 2^{1720142347311} is an apocalyptic number.

1720142347311 is a deficient number, since it is larger than the sum of its proper divisors (811387900377).

1720142347311 is a wasteful number, since it uses less digits than its factorization.

1720142347311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3606168502 (or 3606168499 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

Adding to 1720142347311 its reverse (1137432410271), we get a palindrome (2857574757582).

The spelling of 1720142347311 in words is "one trillion, seven hundred twenty billion, one hundred forty-two million, three hundred forty-seven thousand, three hundred eleven".