30874961 has 4 divisors (see below), whose sum is σ = 33249972. Its totient is φ = 28499952.

The previous prime is 30874939. The next prime is 30874973. The reversal of 30874961 is 16947803.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8737936 + 22137025 = 2956^2 + 4705^2 .

It is not a de Polignac number, because 30874961 - 2⁶ = 30874897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30874561) 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, 1187486 + ... + 1187511.

It is an arithmetic number, because the mean of its divisors is an integer number (8312493).

Almost surely, 2^30874961 is an apocalyptic number.

It is an amenable number.

30874961 is a deficient number, since it is larger than the sum of its proper divisors (2375011).

30874961 is a wasteful number, since it uses less digits than its factorization.

30874961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375010.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 30874961 is about 5556.5241833362. The cubic root of 30874961 is about 313.7151357799.

The spelling of 30874961 in words is "thirty million, eight hundred seventy-four thousand, nine hundred sixty-one".