30997874 has 8 divisors (see below), whose sum is σ = 46553520. Its totient is φ = 15480036.

The previous prime is 30997871. The next prime is 30997891. The reversal of 30997874 is 47879903.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30997871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7304 + ... + 10739.

It is an arithmetic number, because the mean of its divisors is an integer number (5819190).

Almost surely, 2^30997874 is an apocalyptic number.

30997874 is a deficient number, since it is larger than the sum of its proper divisors (15555646).

30997874 is a wasteful number, since it uses less digits than its factorization.

30997874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18904.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 30997874 is about 5567.5734391205. The cubic root of 30997874 is about 314.1308838112.

The spelling of 30997874 in words is "thirty million, nine hundred ninety-seven thousand, eight hundred seventy-four".