7310728133 has 8 divisors (see below), whose sum is σ = 7348287480. Its totient is φ = 7273218240.

The previous prime is 7310728121. The next prime is 7310728231. The reversal of 7310728133 is 3318270137.

It can be written as a sum of positive squares in 4 ways, for example, as 452072644 + 6858655489 = 21262^2 + 82817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7310728133 - 2⁸ = 7310727877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7310728093 and 7310728102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7310718133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304691 + ... + 327807.

It is an arithmetic number, because the mean of its divisors is an integer number (918535935).

Almost surely, 2^7310728133 is an apocalyptic number.

It is an amenable number.

7310728133 is a deficient number, since it is larger than the sum of its proper divisors (37559347).

7310728133 is a wasteful number, since it uses less digits than its factorization.

7310728133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24727.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 7310728133 is about 85502.7960536964. The cubic root of 7310728133 is about 1940.8272354218.

The spelling of 7310728133 in words is "seven billion, three hundred ten million, seven hundred twenty-eight thousand, one hundred thirty-three".