30840843 has 12 divisors (see below), whose sum is σ = 45199784. Its totient is φ = 18691200.

The previous prime is 30840841. The next prime is 30840853. The reversal of 30840843 is 34804803.

It is not a de Polignac number, because 30840843 - 2¹ = 30840841 is a prime.

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 30840843.

It is not an unprimeable number, because it can be changed into a prime (30840841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42118 + ... + 42843.

Almost surely, 2^30840843 is an apocalyptic number.

30840843 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

30840843 is a deficient number, since it is larger than the sum of its proper divisors (14358941).

30840843 is a wasteful number, since it uses less digits than its factorization.

30840843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84986 (or 84975 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 30840843 is about 5553.4532500058. The cubic root of 30840843 is about 313.5995374913.

The spelling of 30840843 in words is "thirty million, eight hundred forty thousand, eight hundred forty-three".