30961330 has 16 divisors (see below), whose sum is σ = 56171520. Its totient is φ = 12286512.

The previous prime is 30961327. The next prime is 30961331. The reversal of 30961330 is 3316903.

It is a junction number, because it is equal to n+sod(n) for n = 30961295 and 30961304.

It is not an unprimeable number, because it can be changed into a prime (30961331) 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, 10920 + ... + 13459.

It is an arithmetic number, because the mean of its divisors is an integer number (3510720).

Almost surely, 2^30961330 is an apocalyptic number.

30961330 is a deficient number, since it is larger than the sum of its proper divisors (25210190).

30961330 is a wasteful number, since it uses less digits than its factorization.

30961330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24513.

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 30961330 is about 5564.2906106709. The cubic root of 30961330 is about 314.0073902543.

The spelling of 30961330 in words is "thirty million, nine hundred sixty-one thousand, three hundred thirty".