30690835121 has 2 divisors, whose sum is σ = 30690835122. Its totient is φ = 30690835120.

The previous prime is 30690835079. The next prime is 30690835139. The reversal of 30690835121 is 12153809603.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22053735025 + 8637100096 = 148505^2 + 92936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30690835121 is a prime.

It is not a weakly prime, because it can be changed into another prime (30690835181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15345417560 + 15345417561.

It is an arithmetic number, because the mean of its divisors is an integer number (15345417561).

Almost surely, 2^30690835121 is an apocalyptic number.

It is an amenable number.

30690835121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30690835121 is an equidigital number, since it uses as much as digits as its factorization.

30690835121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 30690835121 in words is "thirty billion, six hundred ninety million, eight hundred thirty-five thousand, one hundred twenty-one".