30120231 has 8 divisors (see below), whose sum is σ = 40196464. Its totient is φ = 20062080.

The previous prime is 30120221. The next prime is 30120239. The reversal of 30120231 is 13202103.

It is a happy number.

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

It is not a de Polignac number, because 30120231 - 2¹¹ = 30118183 is a prime.

It is a super-2 number, since 2×30120231² = 1814456630986722, 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 (30120239) 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, 21 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (5024558).

Almost surely, 2^30120231 is an apocalyptic number.

30120231 is a deficient number, since it is larger than the sum of its proper divisors (10076233).

30120231 is a wasteful number, since it uses less digits than its factorization.

30120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9041.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 30120231 is about 5488.1901388345. The cubic root of 30120231 is about 311.1377924916.

Adding to 30120231 its reverse (13202103), we get a palindrome (43322334).

The spelling of 30120231 in words is "thirty million, one hundred twenty thousand, two hundred thirty-one".