30481173 has 6 divisors (see below), whose sum is σ = 44028374. Its totient is φ = 20320776.

The previous prime is 30481159. The next prime is 30481177. The reversal of 30481173 is 37118403.

It can be written as a sum of positive squares in only one way, i.e., 29844369 + 636804 = 5463^2 + 798^2 .

It is not a de Polignac number, because 30481173 - 2¹⁸ = 30219029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30481177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1693390 + ... + 1693407.

Almost surely, 2^30481173 is an apocalyptic number.

It is an amenable number.

30481173 is a deficient number, since it is larger than the sum of its proper divisors (13547201).

30481173 is a wasteful number, since it uses less digits than its factorization.

30481173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386803 (or 3386800 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 30481173 is about 5520.9757289812. The cubic root of 30481173 is about 312.3756877286.

Adding to 30481173 its reverse (37118403), we get a palindrome (67599576).

The spelling of 30481173 in words is "thirty million, four hundred eighty-one thousand, one hundred seventy-three".