213033123 has 12 divisors (see below), whose sum is σ = 308004528. Its totient is φ = 141888240.

The previous prime is 213033109. The next prime is 213033131. The reversal of 213033123 is 321330312.

It is not a de Polignac number, because 213033123 - 2⁸ = 213032867 is a prime.

It is a super-2 number, since 2×213033123² = 90766222990266258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213033096 and 213033105.

It is not an unprimeable number, because it can be changed into a prime (213033173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 543 + ... + 20648.

It is an arithmetic number, because the mean of its divisors is an integer number (25667044).

Almost surely, 2^213033123 is an apocalyptic number.

213033123 is a deficient number, since it is larger than the sum of its proper divisors (94971405).

213033123 is a wasteful number, since it uses less digits than its factorization.

213033123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22314 (or 22311 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 213033123 is about 14595.6542504952. The cubic root of 213033123 is about 597.2402171268.

Adding to 213033123 its reverse (321330312), we get a palindrome (534363435).

It can be divided in two parts, 2130 and 33123, that added together give a palindrome (35253).

The spelling of 213033123 in words is "two hundred thirteen million, thirty-three thousand, one hundred twenty-three".