28148112831 has 8 divisors (see below), whose sum is σ = 39738512304. Its totient is φ = 17661560960.

The previous prime is 28148112827. The next prime is 28148112947. The reversal of 28148112831 is 13821184182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28148112831 - 2² = 28148112827 is a prime.

It is a super-2 number, since 2×28148112831² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28148112831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28148112631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275961840 + ... + 275961941.

It is an arithmetic number, because the mean of its divisors is an integer number (4967314038).

Almost surely, 2^28148112831 is an apocalyptic number.

28148112831 is a deficient number, since it is larger than the sum of its proper divisors (11590399473).

28148112831 is a wasteful number, since it uses less digits than its factorization.

28148112831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551923801.

The product of its digits is 24576, while the sum is 39.

The spelling of 28148112831 in words is "twenty-eight billion, one hundred forty-eight million, one hundred twelve thousand, eight hundred thirty-one".