28131253283 has 16 divisors (see below), whose sum is σ = 32259409920. Its totient is φ = 24030535200.

The previous prime is 28131253279. The next prime is 28131253303. The reversal of 28131253283 is 38235213182.

It is not a de Polignac number, because 28131253283 - 2² = 28131253279 is a prime.

It is a super-2 number, since 2×28131253283² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28131252283) 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, 6584438 + ... + 6588708.

It is an arithmetic number, because the mean of its divisors is an integer number (2016213120).

Almost surely, 2^28131253283 is an apocalyptic number.

28131253283 is a deficient number, since it is larger than the sum of its proper divisors (4128156637).

28131253283 is a wasteful number, since it uses less digits than its factorization.

28131253283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7258.

The product of its digits is 69120, while the sum is 38.

The spelling of 28131253283 in words is "twenty-eight billion, one hundred thirty-one million, two hundred fifty-three thousand, two hundred eighty-three".