30968869 has 4 divisors (see below), whose sum is σ = 31360960. Its totient is φ = 30576780.

The previous prime is 30968867. The next prime is 30968881. The reversal of 30968869 is 96886903.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30968869 - 2¹ = 30968867 is a prime.

It is a super-2 number, since 2×30968869² = 1918141694278322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30968867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195927 + ... + 196084.

It is an arithmetic number, because the mean of its divisors is an integer number (7840240).

Almost surely, 2^30968869 is an apocalyptic number.

It is an amenable number.

30968869 is a deficient number, since it is larger than the sum of its proper divisors (392091).

30968869 is an equidigital number, since it uses as much as digits as its factorization.

30968869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392090.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 30968869 is about 5564.9680142836. The cubic root of 30968869 is about 314.0328748357.

The spelling of 30968869 in words is "thirty million, nine hundred sixty-eight thousand, eight hundred sixty-nine".