44312013 has 24 divisors (see below), whose sum is σ = 68023800. Its totient is φ = 27700224.

The previous prime is 44312011. The next prime is 44312057. The reversal of 44312013 is 31021344.

It can be written as a sum of positive squares in 4 ways, for example, as 11168964 + 33143049 = 3342^2 + 5757^2 .

It is not a de Polignac number, because 44312013 - 2¹ = 44312011 is a prime.

It is a super-2 number, since 2×44312013² = 3927108992224338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44312011) 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, 77593 + ... + 78161.

It is an arithmetic number, because the mean of its divisors is an integer number (2834325).

Almost surely, 2^44312013 is an apocalyptic number.

It is an amenable number.

44312013 is a deficient number, since it is larger than the sum of its proper divisors (23711787).

44312013 is a wasteful number, since it uses less digits than its factorization.

44312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101 (or 1098 counting only the distinct ones).

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

The square root of 44312013 is about 6656.7268984089. The cubic root of 44312013 is about 353.8673495144.

Adding to 44312013 its reverse (31021344), we get a palindrome (75333357).

The spelling of 44312013 in words is "forty-four million, three hundred twelve thousand, thirteen".