123213036 has 24 divisors (see below), whose sum is σ = 294510384. Its totient is φ = 40069120.

The previous prime is 123213019. The next prime is 123213037. The reversal of 123213036 is 630312321.

It is not an unprimeable number, because it can be changed into a prime (123213037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124725 + ... + 125708.

It is an arithmetic number, because the mean of its divisors is an integer number (12271266).

Almost surely, 2^123213036 is an apocalyptic number.

It is an amenable number.

123213036 is an abundant number, since it is smaller than the sum of its proper divisors (171297348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123213036 is a wasteful number, since it uses less digits than its factorization.

123213036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250481 (or 250479 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 123213036 is about 11100.1367559143. The cubic root of 123213036 is about 497.6059365493.

Adding to 123213036 its reverse (630312321), we get a palindrome (753525357).

The spelling of 123213036 in words is "one hundred twenty-three million, two hundred thirteen thousand, thirty-six".