28311389315 has 16 divisors (see below), whose sum is σ = 37289569536. Its totient is φ = 20463775200.

The previous prime is 28311389311. The next prime is 28311389317. The reversal of 28311389315 is 51398311382.

It is not a de Polignac number, because 28311389315 - 2² = 28311389311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28311389311) 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, 1570031 + ... + 1587960.

It is an arithmetic number, because the mean of its divisors is an integer number (2330598096).

Almost surely, 2^28311389315 is an apocalyptic number.

28311389315 is a deficient number, since it is larger than the sum of its proper divisors (8978180221).

28311389315 is a wasteful number, since it uses less digits than its factorization.

28311389315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158170.

The product of its digits is 155520, while the sum is 44.

The spelling of 28311389315 in words is "twenty-eight billion, three hundred eleven million, three hundred eighty-nine thousand, three hundred fifteen".