113213144 has 16 divisors (see below), whose sum is σ = 231572520. Its totient is φ = 51460480.

The previous prime is 113213143. The next prime is 113213159. The reversal of 113213144 is 441312311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113213143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643169 + ... + 643344.

Almost surely, 2^113213144 is an apocalyptic number.

It is an amenable number.

113213144 is an abundant number, since it is smaller than the sum of its proper divisors (118359376).

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

113213144 is a wasteful number, since it uses less digits than its factorization.

113213144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286530 (or 1286526 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 113213144 is about 10640.1665400500. The cubic root of 113213144 is about 483.7625933108.

Adding to 113213144 its reverse (441312311), we get a palindrome (554525455).

The spelling of 113213144 in words is "one hundred thirteen million, two hundred thirteen thousand, one hundred forty-four".