213130135155 has 24 divisors (see below), whose sum is σ = 396683028432. Its totient is φ = 97430918592.

The previous prime is 213130135147. The next prime is 213130135159. The reversal of 213130135155 is 551531031312.

It is not a de Polignac number, because 213130135155 - 2³ = 213130135147 is a prime.

It is a super-2 number, since 2×213130135155² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213130135159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144985752 + ... + 144987221.

It is an arithmetic number, because the mean of its divisors is an integer number (16528459518).

Almost surely, 2^213130135155 is an apocalyptic number.

213130135155 is a deficient number, since it is larger than the sum of its proper divisors (183552893277).

213130135155 is a wasteful number, since it uses less digits than its factorization.

213130135155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289972995 (or 289972988 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 30.

Adding to 213130135155 its reverse (551531031312), we get a palindrome (764661166467).

The spelling of 213130135155 in words is "two hundred thirteen billion, one hundred thirty million, one hundred thirty-five thousand, one hundred fifty-five".