30791133 has 6 divisors (see below), whose sum is σ = 44476094. Its totient is φ = 20527416.

The previous prime is 30791113. The next prime is 30791143. The reversal of 30791133 is 33119703.

It can be written as a sum of positive squares in only one way, i.e., 25674489 + 5116644 = 5067^2 + 2262^2 .

It is not a de Polignac number, because 30791133 - 2¹⁸ = 30528989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30791097 and 30791106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30791113) 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 5 ways as a sum of consecutive naturals, for example, 1710610 + ... + 1710627.

Almost surely, 2^30791133 is an apocalyptic number.

It is an amenable number.

30791133 is a deficient number, since it is larger than the sum of its proper divisors (13684961).

30791133 is a wasteful number, since it uses less digits than its factorization.

30791133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421243 (or 3421240 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 27.

The square root of 30791133 is about 5548.9758514522. The cubic root of 30791133 is about 313.4309578353.

The spelling of 30791133 in words is "thirty million, seven hundred ninety-one thousand, one hundred thirty-three".