30331121 has 8 divisors (see below), whose sum is σ = 31256064. Its totient is φ = 29417920.

The previous prime is 30331117. The next prime is 30331123. The reversal of 30331121 is 12113303.

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

It is a cyclic number.

It is not a de Polignac number, because 30331121 - 2² = 30331117 is a prime.

It is a super-2 number, since 2×30331121² = 1839953802233282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30331096 and 30331105.

It is not an unprimeable number, because it can be changed into a prime (30331123) 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, 2456 + ... + 8166.

It is an arithmetic number, because the mean of its divisors is an integer number (3907008).

Almost surely, 2^30331121 is an apocalyptic number.

It is an amenable number.

30331121 is a deficient number, since it is larger than the sum of its proper divisors (924943).

30331121 is a wasteful number, since it uses less digits than its factorization.

30331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5871.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 30331121 is about 5507.3696988671. The cubic root of 30331121 is about 311.8622590822.

Adding to 30331121 its reverse (12113303), we get a palindrome (42444424).

The spelling of 30331121 in words is "thirty million, three hundred thirty-one thousand, one hundred twenty-one".