631363 has 4 divisors (see below), whose sum is σ = 668520. Its totient is φ = 594208.

The previous prime is 631361. The next prime is 631387. The reversal of 631363 is 363136.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 631363 - 2¹ = 631361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631361) 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, 18553 + ... + 18586.

It is an arithmetic number, because the mean of its divisors is an integer number (167130).

2⁶³¹³⁶³ is an apocalyptic number.

631363 is a deficient number, since it is larger than the sum of its proper divisors (37157).

631363 is a wasteful number, since it uses less digits than its factorization.

631363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37156.

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

The square root of 631363 is about 794.5835387170. The cubic root of 631363 is about 85.7879669354.

Adding to 631363 its reverse (363136), we get a palindrome (994499).

The spelling of 631363 in words is "six hundred thirty-one thousand, three hundred sixty-three".