30994161 has 32 divisors (see below), whose sum is σ = 46604160. Its totient is φ = 18163200.

The previous prime is 30994153. The next prime is 30994163. The reversal of 30994161 is 16149903.

It is not a de Polignac number, because 30994161 - 2³ = 30994153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (30994163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179071 + ... + 179243.

It is an arithmetic number, because the mean of its divisors is an integer number (1456380).

Almost surely, 2^30994161 is an apocalyptic number.

It is an amenable number.

30994161 is a deficient number, since it is larger than the sum of its proper divisors (15609999).

30994161 is a wasteful number, since it uses less digits than its factorization.

30994161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 30994161 is about 5567.2399804571. The cubic root of 30994161 is about 314.1183408592.

It can be divided in two parts, 3099 and 4161, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 30994161 in words is "thirty million, nine hundred ninety-four thousand, one hundred sixty-one".