5312551321 has 16 divisors (see below), whose sum is σ = 6625474560. Its totient is φ = 4138379280.

The previous prime is 5312551271. The next prime is 5312551333. The reversal of 5312551321 is 1231552135.

It is not a de Polignac number, because 5312551321 - 2¹⁵ = 5312518553 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 5312551321.

It is not an unprimeable number, because it can be changed into a prime (5312551021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300880 + ... + 318046.

It is an arithmetic number, because the mean of its divisors is an integer number (414092160).

Almost surely, 2^5312551321 is an apocalyptic number.

It is an amenable number.

5312551321 is a deficient number, since it is larger than the sum of its proper divisors (1312923239).

5312551321 is a wasteful number, since it uses less digits than its factorization.

5312551321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21204.

The product of its digits is 4500, while the sum is 28.

The square root of 5312551321 is about 72887.2507438715. The cubic root of 5312551321 is about 1744.8886304788. Note that the first 3 decimals are identical.

The spelling of 5312551321 in words is "five billion, three hundred twelve million, five hundred fifty-one thousand, three hundred twenty-one".