40113013 has 8 divisors (see below), whose sum is σ = 42600600. Its totient is φ = 37639680.

The previous prime is 40112983. The next prime is 40113019. The reversal of 40113013 is 31031104.

It can be written as a sum of positive squares in 4 ways, for example, as 21511044 + 18601969 = 4638^2 + 4313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40113013 - 2²⁵ = 6558581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40112984 and 40113002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40113019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2553 + ... + 9313.

It is an arithmetic number, because the mean of its divisors is an integer number (5325075).

Almost surely, 2^40113013 is an apocalyptic number.

It is an amenable number.

40113013 is a deficient number, since it is larger than the sum of its proper divisors (2487587).

40113013 is a wasteful number, since it uses less digits than its factorization.

40113013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7127.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 40113013 is about 6333.4834806763. The cubic root of 40113013 is about 342.3169690007.

Adding to 40113013 its reverse (31031104), we get a palindrome (71144117).

The spelling of 40113013 in words is "forty million, one hundred thirteen thousand, thirteen".