30111009961 has 2 divisors, whose sum is σ = 30111009962. Its totient is φ = 30111009960.

The previous prime is 30111009949. The next prime is 30111010003. The reversal of 30111009961 is 16990011103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16216494336 + 13894515625 = 127344^2 + 117875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30111009961 is a prime.

It is not a weakly prime, because it can be changed into another prime (30111009941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15055504980 + 15055504981.

It is an arithmetic number, because the mean of its divisors is an integer number (15055504981).

Almost surely, 2^30111009961 is an apocalyptic number.

It is an amenable number.

30111009961 is a deficient number, since it is larger than the sum of its proper divisors (1).

30111009961 is an equidigital number, since it uses as much as digits as its factorization.

30111009961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 31.

The spelling of 30111009961 in words is "thirty billion, one hundred eleven million, nine thousand, nine hundred sixty-one".