213011123 has 8 divisors (see below), whose sum is σ = 229519248. Its totient is φ = 196520544.

The previous prime is 213011093. The next prime is 213011159. The reversal of 213011123 is 321110312.

213011123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 213011123 - 2¹² = 213007027 is a prime.

It is a super-2 number, since 2×213011123² = 90747477043442258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213011098 and 213011107.

It is not an unprimeable number, because it can be changed into a prime (213010123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32165 + ... + 38217.

It is an arithmetic number, because the mean of its divisors is an integer number (28689906).

Almost surely, 2^213011123 is an apocalyptic number.

213011123 is a deficient number, since it is larger than the sum of its proper divisors (16508125).

213011123 is a wasteful number, since it uses less digits than its factorization.

213011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8773.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 213011123 is about 14594.9005820526. The cubic root of 213011123 is about 597.2196573551.

Adding to 213011123 its reverse (321110312), we get a palindrome (534121435).

The spelling of 213011123 in words is "two hundred thirteen million, eleven thousand, one hundred twenty-three".