30531021021353 has 2 divisors, whose sum is σ = 30531021021354. Its totient is φ = 30531021021352.

The previous prime is 30531021021287. The next prime is 30531021021373. The reversal of 30531021021353 is 35312012013503.

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., 29795735351209 + 735285670144 = 5458547^2 + 857488^2 .

It is a cyclic number.

It is not a de Polignac number, because 30531021021353 - 2⁸ = 30531021021097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30531021021373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15265510510676 + 15265510510677.

It is an arithmetic number, because the mean of its divisors is an integer number (15265510510677).

Almost surely, 2^{30531021021353} is an apocalyptic number.

It is an amenable number.

30531021021353 is a deficient number, since it is larger than the sum of its proper divisors (1).

30531021021353 is an equidigital number, since it uses as much as digits as its factorization.

30531021021353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 30531021021353 its reverse (35312012013503), we get a palindrome (65843033034856).

The spelling of 30531021021353 in words is "thirty trillion, five hundred thirty-one billion, twenty-one million, twenty-one thousand, three hundred fifty-three".