30117961 has 4 divisors (see below), whose sum is σ = 30480912. Its totient is φ = 29755012.

The previous prime is 30117959. The next prime is 30117973. The reversal of 30117961 is 16971103.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16971103 = 181 ⋅93763.

It is a cyclic number.

It is not a de Polignac number, because 30117961 - 2¹ = 30117959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30115961) 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, 181351 + ... + 181516.

It is an arithmetic number, because the mean of its divisors is an integer number (7620228).

Almost surely, 2^30117961 is an apocalyptic number.

It is an amenable number.

30117961 is a deficient number, since it is larger than the sum of its proper divisors (362951).

30117961 is an equidigital number, since it uses as much as digits as its factorization.

30117961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362950.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 30117961 is about 5487.9833272341. The cubic root of 30117961 is about 311.1299760339.

The spelling of 30117961 in words is "thirty million, one hundred seventeen thousand, nine hundred sixty-one".