103213044 has 72 divisors (see below), whose sum is σ = 287659008. Its totient is φ = 30942720.

The previous prime is 103213039. The next prime is 103213049. The reversal of 103213044 is 440312301.

It is an interprime number because it is at equal distance from previous prime (103213039) and next prime (103213049).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103213049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37069 + ... + 39755.

It is an arithmetic number, because the mean of its divisors is an integer number (3995264).

Almost surely, 2^103213044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103213044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143829504).

103213044 is an abundant number, since it is smaller than the sum of its proper divisors (184445964).

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

103213044 is a wasteful number, since it uses less digits than its factorization.

103213044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805 (or 2800 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 103213044 is about 10159.3820678228. The cubic root of 103213044 is about 469.0777811935.

Adding to 103213044 its reverse (440312301), we get a palindrome (543525345).

The spelling of 103213044 in words is "one hundred three million, two hundred thirteen thousand, forty-four".