30969481 has 8 divisors (see below), whose sum is σ = 32138120. Its totient is φ = 29818368.

The previous prime is 30969469. The next prime is 30969493. The reversal of 30969481 is 18496903.

It is an interprime number because it is at equal distance from previous prime (30969469) and next prime (30969493).

It can be written as a sum of positive squares in 4 ways, for example, as 13995081 + 16974400 = 3741^2 + 4120^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30969481 is a prime.

It is a super-2 number, since 2×30969481² = 1918217506818722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30969401) 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, 726 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (4017265).

Almost surely, 2^30969481 is an apocalyptic number.

It is an amenable number.

30969481 is a deficient number, since it is larger than the sum of its proper divisors (1168639).

30969481 is an equidigital number, since it uses as much as digits as its factorization.

30969481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8763.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 30969481 is about 5565.0230008509. The cubic root of 30969481 is about 314.0349434383.

The spelling of 30969481 in words is "thirty million, nine hundred sixty-nine thousand, four hundred eighty-one".