30946961 has 2 divisors, whose sum is σ = 30946962. Its totient is φ = 30946960.

The previous prime is 30946957. The next prime is 30946999. The reversal of 30946961 is 16964903.

It is an a-pointer prime, because the next prime (30946999) can be obtained adding 30946961 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24601600 + 6345361 = 4960^2 + 2519^2 .

It is a cyclic number.

It is not a de Polignac number, because 30946961 - 2² = 30946957 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30945961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15473480 + 15473481.

It is an arithmetic number, because the mean of its divisors is an integer number (15473481).

Almost surely, 2^30946961 is an apocalyptic number.

It is an amenable number.

30946961 is a deficient number, since it is larger than the sum of its proper divisors (1).

30946961 is an equidigital number, since it uses as much as digits as its factorization.

30946961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 30946961 is about 5562.9992809635. Note that the first 3 decimals coincide. The cubic root of 30946961 is about 313.9588063125.

The spelling of 30946961 in words is "thirty million, nine hundred forty-six thousand, nine hundred sixty-one".