30989371 has 8 divisors (see below), whose sum is σ = 36637920. Its totient is φ = 25646208.

The previous prime is 30989353. The next prime is 30989381. The reversal of 30989371 is 17398903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30989371 - 2²¹ = 28892219 is a prime.

It is a super-2 number, since 2×30989371² = 1920682229951282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30989311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76126 + ... + 76531.

It is an arithmetic number, because the mean of its divisors is an integer number (4579740).

Almost surely, 2^30989371 is an apocalyptic number.

30989371 is a deficient number, since it is larger than the sum of its proper divisors (5648549).

30989371 is a wasteful number, since it uses less digits than its factorization.

30989371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152693.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 30989371 is about 5566.8097686197. The cubic root of 30989371 is about 314.1021581942.

The spelling of 30989371 in words is "thirty million, nine hundred eighty-nine thousand, three hundred seventy-one".