28313021395 has 4 divisors (see below), whose sum is σ = 33975625680. Its totient is φ = 22650417112.

The previous prime is 28313021393. The next prime is 28313021419. The reversal of 28313021395 is 59312031382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28313021395 - 2¹ = 28313021393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28313021393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2831302135 + ... + 2831302144.

It is an arithmetic number, because the mean of its divisors is an integer number (8493906420).

Almost surely, 2^28313021395 is an apocalyptic number.

28313021395 is a deficient number, since it is larger than the sum of its proper divisors (5662604285).

28313021395 is an equidigital number, since it uses as much as digits as its factorization.

28313021395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5662604284.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 28313021395 in words is "twenty-eight billion, three hundred thirteen million, twenty-one thousand, three hundred ninety-five".