213030031123 has 16 divisors (see below), whose sum is σ = 265349742336. Its totient is φ = 166520489760.

The previous prime is 213030031121. The next prime is 213030031163. The reversal of 213030031123 is 321130030312.

It is a cyclic number.

It is not a de Polignac number, because 213030031123 - 2¹ = 213030031121 is a prime.

It is a super-2 number, since 2×213030031123² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213030031123.

It is not an unprimeable number, because it can be changed into a prime (213030031121) 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, 14094793 + ... + 14109898.

It is an arithmetic number, because the mean of its divisors is an integer number (16584358896).

Almost surely, 2^213030031123 is an apocalyptic number.

213030031123 is a deficient number, since it is larger than the sum of its proper divisors (52319711213).

213030031123 is a wasteful number, since it uses less digits than its factorization.

213030031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28204794.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 213030031123 its reverse (321130030312), we get a palindrome (534160061435).

The spelling of 213030031123 in words is "two hundred thirteen billion, thirty million, thirty-one thousand, one hundred twenty-three".