30315503081 has 2 divisors, whose sum is σ = 30315503082. Its totient is φ = 30315503080.

The previous prime is 30315502979. The next prime is 30315503083. The reversal of 30315503081 is 18030551303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30262081600 + 53421481 = 173960^2 + 7309^2 .

It is a cyclic number.

It is not a de Polignac number, because 30315503081 - 2¹⁰ = 30315502057 is a prime.

It is a super-2 number, since 2×30315503081² (a number of 22 digits) contains 22 as substring.

Together with 30315503083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30315503083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15157751540 + 15157751541.

It is an arithmetic number, because the mean of its divisors is an integer number (15157751541).

Almost surely, 2^30315503081 is an apocalyptic number.

It is an amenable number.

30315503081 is a deficient number, since it is larger than the sum of its proper divisors (1).

30315503081 is an equidigital number, since it uses as much as digits as its factorization.

30315503081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 30315503081 in words is "thirty billion, three hundred fifteen million, five hundred three thousand, eighty-one".