30315121255 has 8 divisors (see below), whose sum is σ = 36449618400. Its totient is φ = 24204448416.

The previous prime is 30315121219. The next prime is 30315121271. The reversal of 30315121255 is 55212151303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30315121255 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5953275 + ... + 5958364.

It is an arithmetic number, because the mean of its divisors is an integer number (4556202300).

Almost surely, 2^30315121255 is an apocalyptic number.

30315121255 is a deficient number, since it is larger than the sum of its proper divisors (6134497145).

30315121255 is a wasteful number, since it uses less digits than its factorization.

30315121255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11912153.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 30315121255 its reverse (55212151303), we get a palindrome (85527272558).

The spelling of 30315121255 in words is "thirty billion, three hundred fifteen million, one hundred twenty-one thousand, two hundred fifty-five".