30641081 has 4 divisors (see below), whose sum is σ = 31697700. Its totient is φ = 29584464.

The previous prime is 30641057. The next prime is 30641087. The reversal of 30641081 is 18014603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19882681 + 10758400 = 4459^2 + 3280^2 .

It is a cyclic number.

It is not a de Polignac number, because 30641081 - 2¹⁴ = 30624697 is a prime.

It is a super-2 number, since 2×30641081² = 1877751689697122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30641087) 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, 528266 + ... + 528323.

It is an arithmetic number, because the mean of its divisors is an integer number (7924425).

Almost surely, 2^30641081 is an apocalyptic number.

It is an amenable number.

30641081 is a deficient number, since it is larger than the sum of its proper divisors (1056619).

30641081 is a wasteful number, since it uses less digits than its factorization.

30641081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056618.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 30641081 is about 5535.4386456721. The cubic root of 30641081 is about 312.9209890835.

Adding to 30641081 its reverse (18014603), we get a palindrome (48655684).

The spelling of 30641081 in words is "thirty million, six hundred forty-one thousand, eighty-one".