45231213 has 16 divisors (see below), whose sum is σ = 63187200. Its totient is φ = 28741440.

The previous prime is 45231211. The next prime is 45231217. The reversal of 45231213 is 31213254.

45231213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45231213 - 2¹ = 45231211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45231213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45231211) 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 15 ways as a sum of consecutive naturals, for example, 3583 + ... + 10163.

It is an arithmetic number, because the mean of its divisors is an integer number (3949200).

Almost surely, 2^45231213 is an apocalyptic number.

It is an amenable number.

45231213 is a deficient number, since it is larger than the sum of its proper divisors (17955987).

45231213 is a wasteful number, since it uses less digits than its factorization.

45231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692.

The product of its digits is 720, while the sum is 21.

The square root of 45231213 is about 6725.4154518513. The cubic root of 45231213 is about 356.2974752365.

Adding to 45231213 its reverse (31213254), we get a palindrome (76444467).

The spelling of 45231213 in words is "forty-five million, two hundred thirty-one thousand, two hundred thirteen".