363631 has 4 divisors (see below), whose sum is σ = 376200. Its totient is φ = 351064.

The previous prime is 363619. The next prime is 363659. The reversal of 363631 is 136363.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136363 = 19 ⋅7177.

It is a cyclic number.

It is not a de Polignac number, because 363631 - 2⁹ = 363119 is a prime.

It is a super-2 number, since 2×363631² = 264455008322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (363611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6241 + ... + 6298.

It is an arithmetic number, because the mean of its divisors is an integer number (94050).

2³⁶³⁶³¹ is an apocalyptic number.

363631 is a deficient number, since it is larger than the sum of its proper divisors (12569).

363631 is a wasteful number, since it uses less digits than its factorization.

363631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12568.

The product of its digits is 972, while the sum is 22.

The square root of 363631 is about 603.0182418468. The cubic root of 363631 is about 71.3762346138.

Subtracting from 363631 its sum of digits (22), we obtain a square (363609 = 603²).

Adding to 363631 its reverse (136363), we get a palindrome (499994).

The spelling of 363631 in words is "three hundred sixty-three thousand, six hundred thirty-one".