30400911 has 6 divisors (see below), whose sum is σ = 43912440. Its totient is φ = 20267268.

The previous prime is 30400891. The next prime is 30400919. The reversal of 30400911 is 11900403.

It is not a de Polignac number, because 30400911 - 2²³ = 22012303 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30400919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1688931 + ... + 1688948.

It is an arithmetic number, because the mean of its divisors is an integer number (7318740).

Almost surely, 2^30400911 is an apocalyptic number.

30400911 is a deficient number, since it is larger than the sum of its proper divisors (13511529).

30400911 is a wasteful number, since it uses less digits than its factorization.

30400911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377885 (or 3377882 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 30400911 is about 5513.7021138252. The cubic root of 30400911 is about 312.1012676698.

The spelling of 30400911 in words is "thirty million, four hundred thousand, nine hundred eleven".