3128517223357 has 4 divisors (see below), whose sum is σ = 3128526116640. Its totient is φ = 3128508330076.

The previous prime is 3128517223339. The next prime is 3128517223367. The reversal of 3128517223357 is 7533227158213.

3128517223357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3128517223357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3128517223357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128517223367) 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, 3896257 + ... + 4630102.

It is an arithmetic number, because the mean of its divisors is an integer number (782131529160).

Almost surely, 2^{3128517223357} is an apocalyptic number.

It is an amenable number.

3128517223357 is a deficient number, since it is larger than the sum of its proper divisors (8893283).

3128517223357 is an equidigital number, since it uses as much as digits as its factorization.

3128517223357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8893282.

The product of its digits is 2116800, while the sum is 49.

The spelling of 3128517223357 in words is "three trillion, one hundred twenty-eight billion, five hundred seventeen million, two hundred twenty-three thousand, three hundred fifty-seven".