213123130 has 32 divisors (see below), whose sum is σ = 422661888. Its totient is φ = 76728000.

The previous prime is 213123121. The next prime is 213123137. The reversal of 213123130 is 31321312.

It is not an unprimeable number, because it can be changed into a prime (213123137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1519 + ... + 20701.

It is an arithmetic number, because the mean of its divisors is an integer number (13208184).

Almost surely, 2^213123130 is an apocalyptic number.

213123130 is a deficient number, since it is larger than the sum of its proper divisors (209538758).

213123130 is a wasteful number, since it uses less digits than its factorization.

213123130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19302.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 213123130 is about 14598.7372741618. The cubic root of 213123130 is about 597.3243170867.

Adding to 213123130 its reverse (31321312), we get a palindrome (244444442).

It can be divided in two parts, 21312 and 3130, that added together give a palindrome (24442).

The spelling of 213123130 in words is "two hundred thirteen million, one hundred twenty-three thousand, one hundred thirty".