30231121 has 4 divisors (see below), whose sum is σ = 30416752. Its totient is φ = 30045492.

The previous prime is 30231101. The next prime is 30231133. The reversal of 30231121 is 12113203.

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.

It is a cyclic number.

It is not a de Polignac number, because 30231121 - 2⁹ = 30230609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30231101) 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, 92571 + ... + 92896.

It is an arithmetic number, because the mean of its divisors is an integer number (7604188).

Almost surely, 2^30231121 is an apocalyptic number.

It is an amenable number.

30231121 is a deficient number, since it is larger than the sum of its proper divisors (185631).

30231121 is a wasteful number, since it uses less digits than its factorization.

30231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185630.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 30231121 is about 5498.2834594080. The cubic root of 30231121 is about 311.5191509601.

Adding to 30231121 its reverse (12113203), we get a palindrome (42344324).

The spelling of 30231121 in words is "thirty million, two hundred thirty-one thousand, one hundred twenty-one".