30190321 has 6 divisors (see below), whose sum is σ = 35119410. Its totient is φ = 25877376.

The previous prime is 30190301. The next prime is 30190327. The reversal of 30190321 is 12309103.

It can be written as a sum of positive squares in only one way, i.e., 27709696 + 2480625 = 5264^2 + 1575^2 .

It is not a de Polignac number, because 30190321 - 2¹¹ = 30188273 is a prime.

It is a super-2 number, since 2×30190321² = 1822910964166082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30190327) 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, 308016 + ... + 308113.

It is an arithmetic number, because the mean of its divisors is an integer number (5853235).

Almost surely, 2^30190321 is an apocalyptic number.

It is an amenable number.

30190321 is a deficient number, since it is larger than the sum of its proper divisors (4929089).

30190321 is an equidigital number, since it uses as much as digits as its factorization.

30190321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616143 (or 616136 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 30190321 is about 5494.5719578508. The cubic root of 30190321 is about 311.3789455136.

Adding to 30190321 its reverse (12309103), we get a palindrome (42499424).

The spelling of 30190321 in words is "thirty million, one hundred ninety thousand, three hundred twenty-one".