30897923 has 8 divisors (see below), whose sum is σ = 36266592. Its totient is φ = 25767936.

The previous prime is 30897899. The next prime is 30897943. The reversal of 30897923 is 32979803.

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

It is a cyclic number.

It is not a de Polignac number, because 30897923 - 2¹⁸ = 30635779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30897943) 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, 59390 + ... + 59907.

It is an arithmetic number, because the mean of its divisors is an integer number (4533324).

Almost surely, 2^30897923 is an apocalyptic number.

30897923 is a deficient number, since it is larger than the sum of its proper divisors (5368669).

30897923 is a wasteful number, since it uses less digits than its factorization.

30897923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119341.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 30897923 is about 5558.5900190606. The cubic root of 30897923 is about 313.7928874776.

The spelling of 30897923 in words is "thirty million, eight hundred ninety-seven thousand, nine hundred twenty-three".