28127341231 has 16 divisors (see below), whose sum is σ = 30890845440. Its totient is φ = 25398478080.

The previous prime is 28127341219. The next prime is 28127341241. The reversal of 28127341231 is 13214372182.

It is a cyclic number.

It is not a de Polignac number, because 28127341231 - 2²¹ = 28125244079 is a prime.

It is a super-2 number, since 2×28127341231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28127341241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2895775 + ... + 2905471.

It is an arithmetic number, because the mean of its divisors is an integer number (1930677840).

Almost surely, 2^28127341231 is an apocalyptic number.

28127341231 is a deficient number, since it is larger than the sum of its proper divisors (2763504209).

28127341231 is a wasteful number, since it uses less digits than its factorization.

28127341231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11454.

The product of its digits is 16128, while the sum is 34.

The spelling of 28127341231 in words is "twenty-eight billion, one hundred twenty-seven million, three hundred forty-one thousand, two hundred thirty-one".