28131308041823 has 16 divisors (see below), whose sum is σ = 32217974415360. Its totient is φ = 24061671293856.

The previous prime is 28131308041801. The next prime is 28131308041841. The reversal of 28131308041823 is 32814080313182.

It is not a de Polignac number, because 28131308041823 - 2¹² = 28131308037727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28131308091823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4229090 + ... + 8610912.

It is an arithmetic number, because the mean of its divisors is an integer number (2013623400960).

Almost surely, 2^{28131308041823} is an apocalyptic number.

28131308041823 is a deficient number, since it is larger than the sum of its proper divisors (4086666373537).

28131308041823 is a wasteful number, since it uses less digits than its factorization.

28131308041823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4383766.

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 28131308041823 in words is "twenty-eight trillion, one hundred thirty-one billion, three hundred eight million, forty-one thousand, eight hundred twenty-three".