30749331 has 8 divisors (see below), whose sum is σ = 42107344. Its totient is φ = 19945440.

The previous prime is 30749297. The next prime is 30749347. The reversal of 30749331 is 13394703.

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

It is not a de Polignac number, because 30749331 - 2⁶ = 30749267 is a prime.

It is a super-2 number, since 2×30749331² = 1891042713895122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30749351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138400 + ... + 138621.

It is an arithmetic number, because the mean of its divisors is an integer number (5263418).

Almost surely, 2^30749331 is an apocalyptic number.

30749331 is a deficient number, since it is larger than the sum of its proper divisors (11358013).

30749331 is a wasteful number, since it uses less digits than its factorization.

30749331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277061.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 30749331 is about 5545.2079311781. The cubic root of 30749331 is about 313.2890557875.

The spelling of 30749331 in words is "thirty million, seven hundred forty-nine thousand, three hundred thirty-one".