30221413 has 4 divisors (see below), whose sum is σ = 30716908. Its totient is φ = 29725920.

The previous prime is 30221369. The next prime is 30221431. The reversal of 30221413 is 31412203.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31412203 = 211 ⋅148873.

It can be written as a sum of positive squares in 2 ways, for example, as 431649 + 29789764 = 657^2 + 5458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30221413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221453) 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, 247656 + ... + 247777.

It is an arithmetic number, because the mean of its divisors is an integer number (7679227).

Almost surely, 2^30221413 is an apocalyptic number.

It is an amenable number.

30221413 is a deficient number, since it is larger than the sum of its proper divisors (495495).

30221413 is an equidigital number, since it uses as much as digits as its factorization.

30221413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495494.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 30221413 is about 5497.4005675410. The cubic root of 30221413 is about 311.4858017536.

Adding to 30221413 its reverse (31412203), we get a palindrome (61633616).

The spelling of 30221413 in words is "thirty million, two hundred twenty-one thousand, four hundred thirteen".