30405113 has 4 divisors (see below), whose sum is σ = 30417060. Its totient is φ = 30393168.

The previous prime is 30405107. The next prime is 30405127. The reversal of 30405113 is 31150403.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31150403 = 523 ⋅59561.

It can be written as a sum of positive squares in 2 ways, for example, as 26296384 + 4108729 = 5128^2 + 2027^2 .

It is a cyclic number.

It is not a de Polignac number, because 30405113 - 2⁶ = 30405049 is a prime.

It is a super-3 number, since 3×30405113³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30405091 and 30405100.

It is not an unprimeable number, because it can be changed into a prime (30401113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458 + ... + 7811.

It is an arithmetic number, because the mean of its divisors is an integer number (7604265).

Almost surely, 2^30405113 is an apocalyptic number.

It is an amenable number.

30405113 is a deficient number, since it is larger than the sum of its proper divisors (11947).

30405113 is an equidigital number, since it uses as much as digits as its factorization.

30405113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11946.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 30405113 is about 5514.0831513498. The cubic root of 30405113 is about 312.1156465055.

Adding to 30405113 its reverse (31150403), we get a palindrome (61555516).

The spelling of 30405113 in words is "thirty million, four hundred five thousand, one hundred thirteen".