30400213 has 4 divisors (see below), whose sum is σ = 30413728. Its totient is φ = 30386700.

The previous prime is 30400189. The next prime is 30400219. The reversal of 30400213 is 31200403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31200403 = 13 ⋅2400031.

It is a cyclic number.

It is not a de Polignac number, because 30400213 - 2⁹ = 30399701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30400193 and 30400202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30400219) 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, 2481 + ... + 8182.

It is an arithmetic number, because the mean of its divisors is an integer number (7603432).

Almost surely, 2^30400213 is an apocalyptic number.

It is an amenable number.

30400213 is a deficient number, since it is larger than the sum of its proper divisors (13515).

30400213 is a wasteful number, since it uses less digits than its factorization.

30400213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13514.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30400213 is about 5513.6388166074. The cubic root of 30400213 is about 312.0988790533.

Adding to 30400213 its reverse (31200403), we get a palindrome (61600616).

The spelling of 30400213 in words is "thirty million, four hundred thousand, two hundred thirteen".