30023121 has 4 divisors (see below), whose sum is σ = 40030832. Its totient is φ = 20015412.

The previous prime is 30023107. The next prime is 30023137. The reversal of 30023121 is 12132003.

It is a happy number.

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 not a de Polignac number, because 30023121 - 2⁵ = 30023089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30023097 and 30023106.

It is not an unprimeable number, because it can be changed into a prime (30023321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5003851 + ... + 5003856.

It is an arithmetic number, because the mean of its divisors is an integer number (10007708).

Almost surely, 2^30023121 is an apocalyptic number.

It is an amenable number.

30023121 is a deficient number, since it is larger than the sum of its proper divisors (10007711).

30023121 is a wasteful number, since it uses less digits than its factorization.

30023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10007710.

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

The square root of 30023121 is about 5479.3358174144. The cubic root of 30023121 is about 310.8030549002.

Adding to 30023121 its reverse (12132003), we get a palindrome (42155124).

The spelling of 30023121 in words is "thirty million, twenty-three thousand, one hundred twenty-one".