30940551 has 12 divisors (see below), whose sum is σ = 44756712. Its totient is φ = 20597136.

The previous prime is 30940549. The next prime is 30940577. The reversal of 30940551 is 15504903.

It is not a de Polignac number, because 30940551 - 2¹ = 30940549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30940541) 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 11 ways as a sum of consecutive naturals, for example, 5365 + ... + 9521.

It is an arithmetic number, because the mean of its divisors is an integer number (3729726).

Almost surely, 2^30940551 is an apocalyptic number.

30940551 is a deficient number, since it is larger than the sum of its proper divisors (13816161).

30940551 is a wasteful number, since it uses less digits than its factorization.

30940551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4990 (or 4987 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 30940551 is about 5562.4231230643. The cubic root of 30940551 is about 313.9371282021.

The spelling of 30940551 in words is "thirty million, nine hundred forty thousand, five hundred fifty-one".