30730961 has 8 divisors (see below), whose sum is σ = 32497920. Its totient is φ = 28978992.

The previous prime is 30730949. The next prime is 30730963. The reversal of 30730961 is 16903703.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30730961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30730963) 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, 611 + ... + 7863.

It is an arithmetic number, because the mean of its divisors is an integer number (4062240).

Almost surely, 2^30730961 is an apocalyptic number.

It is an amenable number.

30730961 is a deficient number, since it is larger than the sum of its proper divisors (1766959).

30730961 is a wasteful number, since it uses less digits than its factorization.

30730961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7495.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 30730961 is about 5543.5512985811. The cubic root of 30730961 is about 313.2266558783.

The spelling of 30730961 in words is "thirty million, seven hundred thirty thousand, nine hundred sixty-one".