30981167 has 12 divisors (see below), whose sum is σ = 35966160. Its totient is φ = 26139168.

The previous prime is 30981163. The next prime is 30981239. The reversal of 30981167 is 76118903.

It is not a de Polignac number, because 30981167 - 2² = 30981163 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 (30981163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138818 + ... + 139040.

It is an arithmetic number, because the mean of its divisors is an integer number (2997180).

Almost surely, 2^30981167 is an apocalyptic number.

30981167 is a deficient number, since it is larger than the sum of its proper divisors (4984993).

30981167 is an frugal number, since it uses more digits than its factorization.

30981167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 30981167 is about 5566.0728525595. The cubic root of 30981167 is about 314.0744377054.

The spelling of 30981167 in words is "thirty million, nine hundred eighty-one thousand, one hundred sixty-seven".