30549131 has 4 divisors (see below), whose sum is σ = 32157000. Its totient is φ = 28941264.

The previous prime is 30549121. The next prime is 30549133. The reversal of 30549131 is 13194503.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30549131 - 2⁶ = 30549067 is a prime.

It is a super-2 number, since 2×30549131² = 1866498809710322, which contains 22 as substring.

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 30549131.

It is not an unprimeable number, because it can be changed into a prime (30549133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803906 + ... + 803943.

It is an arithmetic number, because the mean of its divisors is an integer number (8039250).

Almost surely, 2^30549131 is an apocalyptic number.

30549131 is a deficient number, since it is larger than the sum of its proper divisors (1607869).

30549131 is a wasteful number, since it uses less digits than its factorization.

30549131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607868.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 30549131 is about 5527.1268304608. The cubic root of 30549131 is about 312.6076633832.

The spelling of 30549131 in words is "thirty million, five hundred forty-nine thousand, one hundred thirty-one".