961130020321 has 2 divisors, whose sum is σ = 961130020322. Its totient is φ = 961130020320.

The previous prime is 961130020283. The next prime is 961130020327. The reversal of 961130020321 is 123020031169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 950110269696 + 11019750625 = 974736^2 + 104975^2 .

It is a cyclic number.

It is not a de Polignac number, because 961130020321 - 2⁹ = 961130019809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 961130020321.

It is not a weakly prime, because it can be changed into another prime (961130020327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480565010160 + 480565010161.

It is an arithmetic number, because the mean of its divisors is an integer number (480565010161).

Almost surely, 2^961130020321 is an apocalyptic number.

It is an amenable number.

961130020321 is a deficient number, since it is larger than the sum of its proper divisors (1).

961130020321 is an equidigital number, since it uses as much as digits as its factorization.

961130020321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 961130020321 in words is "nine hundred sixty-one billion, one hundred thirty million, twenty thousand, three hundred twenty-one".