30641161 has 4 divisors (see below), whose sum is σ = 30938752. Its totient is φ = 30343572.

The previous prime is 30641159. The next prime is 30641189. The reversal of 30641161 is 16114603.

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 a cyclic number.

It is not a de Polignac number, because 30641161 - 2¹ = 30641159 is a prime.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148641 + ... + 148846.

It is an arithmetic number, because the mean of its divisors is an integer number (7734688).

Almost surely, 2^30641161 is an apocalyptic number.

It is an amenable number.

30641161 is a deficient number, since it is larger than the sum of its proper divisors (297591).

30641161 is a wasteful number, since it uses less digits than its factorization.

30641161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297590.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 30641161 is about 5535.4458718336. The cubic root of 30641161 is about 312.9212614157.

Adding to 30641161 its reverse (16114603), we get a palindrome (46755764).

It can be divided in two parts, 3064 and 1161, that added together give a square (4225 = 65²).

The spelling of 30641161 in words is "thirty million, six hundred forty-one thousand, one hundred sixty-one".