30993117 has 4 divisors (see below), whose sum is σ = 41324160. Its totient is φ = 20662076.

The previous prime is 30993107. The next prime is 30993139. The reversal of 30993117 is 71139903.

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: 71139903 = 3 ⋅23713301.

It is a cyclic number.

It is not a de Polignac number, because 30993117 - 2⁴ = 30993101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30993107) 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, 5165517 + ... + 5165522.

It is an arithmetic number, because the mean of its divisors is an integer number (10331040).

Almost surely, 2^30993117 is an apocalyptic number.

It is an amenable number.

30993117 is a deficient number, since it is larger than the sum of its proper divisors (10331043).

30993117 is a wasteful number, since it uses less digits than its factorization.

30993117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10331042.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 30993117 is about 5567.1462168691. The cubic root of 30993117 is about 314.1148139236.

It can be divided in two parts, 3099 and 3117, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 30993117 in words is "thirty million, nine hundred ninety-three thousand, one hundred seventeen".