30353152981 has 2 divisors, whose sum is σ = 30353152982. Its totient is φ = 30353152980.

The previous prime is 30353152943. The next prime is 30353153023. The reversal of 30353152981 is 18925135303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28652332900 + 1700820081 = 169270^2 + 41241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30353152981 is a prime.

It is a super-2 number, since 2×30353152981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30353152381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15176576490 + 15176576491.

It is an arithmetic number, because the mean of its divisors is an integer number (15176576491).

Almost surely, 2^30353152981 is an apocalyptic number.

It is an amenable number.

30353152981 is a deficient number, since it is larger than the sum of its proper divisors (1).

30353152981 is an equidigital number, since it uses as much as digits as its factorization.

30353152981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 30353152981 in words is "thirty billion, three hundred fifty-three million, one hundred fifty-two thousand, nine hundred eighty-one".