4013531 has 8 divisors (see below), whose sum is σ = 4191264. Its totient is φ = 3839680.

The previous prime is 4013521. The next prime is 4013543. The reversal of 4013531 is 1353104.

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 4013531 - 2¹⁰ = 4012507 is a prime.

It is a super-2 number, since 2×4013531² = 32216862175922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4013521) 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, 1250 + ... + 3096.

It is an arithmetic number, because the mean of its divisors is an integer number (523908).

Almost surely, 2^4013531 is an apocalyptic number.

4013531 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4013531 is a deficient number, since it is larger than the sum of its proper divisors (177733).

4013531 is a wasteful number, since it uses less digits than its factorization.

4013531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 4013531 is about 2003.3798940790. The cubic root of 4013531 is about 158.9188964430.

Adding to 4013531 its reverse (1353104), we get a palindrome (5366635).

The spelling of 4013531 in words is "four million, thirteen thousand, five hundred thirty-one".