3081728231511 has 32 divisors (see below), whose sum is σ = 4239392236800. Its totient is φ = 1989787804416.

The previous prime is 3081728231473. The next prime is 3081728231557. The reversal of 3081728231511 is 1151328271803.

It is not a de Polignac number, because 3081728231511 - 2⁶ = 3081728231447 is a prime.

It is a super-2 number, since 2×3081728231511² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3081728231591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235257840 + ... + 235270938.

It is an arithmetic number, because the mean of its divisors is an integer number (132481007400).

Almost surely, 2^{3081728231511} is an apocalyptic number.

3081728231511 is a deficient number, since it is larger than the sum of its proper divisors (1157664005289).

3081728231511 is a wasteful number, since it uses less digits than its factorization.

3081728231511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22703.

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 3081728231511 in words is "three trillion, eighty-one billion, seven hundred twenty-eight million, two hundred thirty-one thousand, five hundred eleven".