30641121 has 18 divisors (see below), whose sum is σ = 51486162. Its totient is φ = 17508960.

The previous prime is 30641111. The next prime is 30641137. The reversal of 30641121 is 12114603.

It is a happy number.

30641121 is a `hidden beast` number, since 3 + 0 + 641 + 1 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25401600 + 5239521 = 5040^2 + 2289^2 .

It is not a de Polignac number, because 30641121 - 2⁶ = 30641057 is a prime.

It is a super-2 number, since 2×30641121² = 1877756592273282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30641094 and 30641103.

It is not an unprimeable number, because it can be changed into a prime (30641101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 34300 + ... + 35181.

Almost surely, 2^30641121 is an apocalyptic number.

It is an amenable number.

30641121 is a deficient number, since it is larger than the sum of its proper divisors (20845041).

30641121 is a wasteful number, since it uses less digits than its factorization.

30641121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69501 (or 69491 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 30641121 is about 5535.4422587540. The cubic root of 30641121 is about 312.9211252497.

Adding to 30641121 its reverse (12114603), we get a palindrome (42755724).

The spelling of 30641121 in words is "thirty million, six hundred forty-one thousand, one hundred twenty-one".