30512230155 has 96 divisors (see below), whose sum is σ = 58435872768. Its totient is φ = 14605344000.

The previous prime is 30512230141. The next prime is 30512230157. The reversal of 30512230155 is 55103221503.

It is a happy number.

30512230155 is a `hidden beast` number, since 305 + 1 + 2 + 2 + 301 + 55 = 666.

It is not a de Polignac number, because 30512230155 - 2⁸ = 30512229899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30512230157) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12977230 + ... + 12979580.

It is an arithmetic number, because the mean of its divisors is an integer number (608707008).

Almost surely, 2^30512230155 is an apocalyptic number.

30512230155 is a deficient number, since it is larger than the sum of its proper divisors (27923642613).

30512230155 is a wasteful number, since it uses less digits than its factorization.

30512230155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697 (or 2694 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 30512230155 its reverse (55103221503), we get a palindrome (85615451658).

The spelling of 30512230155 in words is "thirty billion, five hundred twelve million, two hundred thirty thousand, one hundred fifty-five".