30961061 has 2 divisors, whose sum is σ = 30961062. Its totient is φ = 30961060.

The previous prime is 30961057. The next prime is 30961081. The reversal of 30961061 is 16016903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15602500 + 15358561 = 3950^2 + 3919^2 .

It is a cyclic number.

It is not a de Polignac number, because 30961061 - 2² = 30961057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30961061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30961031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15480530 + 15480531.

It is an arithmetic number, because the mean of its divisors is an integer number (15480531).

Almost surely, 2^30961061 is an apocalyptic number.

It is an amenable number.

30961061 is a deficient number, since it is larger than the sum of its proper divisors (1).

30961061 is an equidigital number, since it uses as much as digits as its factorization.

30961061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 30961061 is about 5564.2664386242. The cubic root of 30961061 is about 314.0064808594.

Adding to 30961061 its reverse (16016903), we get a palindrome (46977964).

The spelling of 30961061 in words is "thirty million, nine hundred sixty-one thousand, sixty-one".