30974919 has 8 divisors (see below), whose sum is σ = 41625600. Its totient is φ = 20487096.

The previous prime is 30974917. The next prime is 30974953. The reversal of 30974919 is 91947903.

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

It is not a de Polignac number, because 30974919 - 2¹ = 30974917 is a prime.

It is a super-2 number, since 2×30974919² = 1918891214113122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30974917) 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, 40269 + ... + 41030.

It is an arithmetic number, because the mean of its divisors is an integer number (5203200).

Almost surely, 2^30974919 is an apocalyptic number.

30974919 is a deficient number, since it is larger than the sum of its proper divisors (10650681).

30974919 is a wasteful number, since it uses less digits than its factorization.

30974919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81429.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 30974919 is about 5565.5115667834. The cubic root of 30974919 is about 314.0533230605.

The spelling of 30974919 in words is "thirty million, nine hundred seventy-four thousand, nine hundred nineteen".