30832813 has 4 divisors (see below), whose sum is σ = 33635808. Its totient is φ = 28029820.

The previous prime is 30832783. The next prime is 30832819. The reversal of 30832813 is 31823803.

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 not a de Polignac number, because 30832813 - 2⁹ = 30832301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30832819) 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, 1401481 + ... + 1401502.

It is an arithmetic number, because the mean of its divisors is an integer number (8408952).

Almost surely, 2^30832813 is an apocalyptic number.

It is an amenable number.

30832813 is a deficient number, since it is larger than the sum of its proper divisors (2802995).

30832813 is a wasteful number, since it uses less digits than its factorization.

30832813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802994.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 30832813 is about 5552.7302293556. The cubic root of 30832813 is about 313.5723179276.

The spelling of 30832813 in words is "thirty million, eight hundred thirty-two thousand, eight hundred thirteen".