30996161 has 4 divisors (see below), whose sum is σ = 35424192. Its totient is φ = 26568132.

The previous prime is 30996139. The next prime is 30996179. The reversal of 30996161 is 16169903.

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 30996161 - 2¹⁴ = 30979777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30996061) 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, 2214005 + ... + 2214018.

It is an arithmetic number, because the mean of its divisors is an integer number (8856048).

Almost surely, 2^30996161 is an apocalyptic number.

It is an amenable number.

30996161 is a deficient number, since it is larger than the sum of its proper divisors (4428031).

30996161 is an equidigital number, since it uses as much as digits as its factorization.

30996161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428030.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 30996161 is about 5567.4195997787. The cubic root of 30996161 is about 314.1250972196.

The spelling of 30996161 in words is "thirty million, nine hundred ninety-six thousand, one hundred sixty-one".