5321631 has 16 divisors (see below), whose sum is σ = 8154368. Its totient is φ = 3024000.

The previous prime is 5321621. The next prime is 5321633. The reversal of 5321631 is 1361235.

It is not a de Polignac number, because 5321631 - 2²¹ = 3224479 is a prime.

It is a super-2 number, since 2×5321631² = 56639513000322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

5321631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5321598 and 5321607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5321633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3831 + ... + 5031.

It is an arithmetic number, because the mean of its divisors is an integer number (509648).

Almost surely, 2^5321631 is an apocalyptic number.

5321631 is a deficient number, since it is larger than the sum of its proper divisors (2832737).

5321631 is a wasteful number, since it uses less digits than its factorization.

5321631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422.

The product of its digits is 540, while the sum is 21.

The square root of 5321631 is about 2306.8660559296. The cubic root of 5321631 is about 174.5882127482.

Adding to 5321631 its reverse (1361235), we get a palindrome (6682866).

The spelling of 5321631 in words is "five million, three hundred twenty-one thousand, six hundred thirty-one".