28433017313 has 4 divisors (see below), whose sum is σ = 28480327428. Its totient is φ = 28385707200.

The previous prime is 28433017309. The next prime is 28433017321. The reversal of 28433017313 is 31371033482.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27029990464 + 1403026849 = 164408^2 + 37457^2 .

It is a cyclic number.

It is not a de Polignac number, because 28433017313 - 2² = 28433017309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28433017513) 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, 23654156 + ... + 23655357.

It is an arithmetic number, because the mean of its divisors is an integer number (7120081857).

Almost surely, 2^28433017313 is an apocalyptic number.

It is an amenable number.

28433017313 is a deficient number, since it is larger than the sum of its proper divisors (47310115).

28433017313 is an equidigital number, since it uses as much as digits as its factorization.

28433017313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47310114.

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 28433017313 in words is "twenty-eight billion, four hundred thirty-three million, seventeen thousand, three hundred thirteen".