3631013 has 4 divisors (see below), whose sum is σ = 3844620. Its totient is φ = 3417408.

The previous prime is 3631009. The next prime is 3631027. The reversal of 3631013 is 3101363.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2666689 + 964324 = 1633^2 + 982^2 .

It is not a de Polignac number, because 3631013 - 2² = 3631009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 213589 = 3631013 / (3 + 6 + 3 + 1 + 0 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3630982 and 3631000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3631073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106778 + ... + 106811.

It is an arithmetic number, because the mean of its divisors is an integer number (961155).

Almost surely, 2^3631013 is an apocalyptic number.

It is an amenable number.

3631013 is a deficient number, since it is larger than the sum of its proper divisors (213607).

3631013 is a wasteful number, since it uses less digits than its factorization.

3631013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213606.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 3631013 is about 1905.5217133373. The cubic root of 3631013 is about 153.7007315644.

Adding to 3631013 its reverse (3101363), we get a palindrome (6732376).

The spelling of 3631013 in words is "three million, six hundred thirty-one thousand, thirteen".