30542213 has 8 divisors (see below), whose sum is σ = 32957400. Its totient is φ = 28136448.

The previous prime is 30542207. The next prime is 30542243. The reversal of 30542213 is 31224503.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 49729 + 30492484 = 223^2 + 5522^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30542213 - 2⁸ = 30541957 is a prime.

It is a cake number, because a cake can be divided into 30542213 parts by 568 planar cuts.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30542203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5333 + ... + 9461.

It is an arithmetic number, because the mean of its divisors is an integer number (4119675).

Almost surely, 2^30542213 is an apocalyptic number.

It is an amenable number.

30542213 is a deficient number, since it is larger than the sum of its proper divisors (2415187).

30542213 is a wasteful number, since it uses less digits than its factorization.

30542213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30542213 is about 5526.5009725865. The cubic root of 30542213 is about 312.5840644241.

Adding to 30542213 its reverse (31224503), we get a palindrome (61766716).

The spelling of 30542213 in words is "thirty million, five hundred forty-two thousand, two hundred thirteen".