3431631 has 8 divisors (see below), whose sum is σ = 5229184. Its totient is φ = 1960920.

The previous prime is 3431629. The next prime is 3431641. The reversal of 3431631 is 1361343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3431631 - 2¹ = 3431629 is a prime.

It is a super-2 number, since 2×3431631² = 23552182640322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 163411 = 3431631 / (3 + 4 + 3 + 1 + 6 + 3 + 1).

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 3431598 and 3431607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3431621) 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 7 ways as a sum of consecutive naturals, for example, 81685 + ... + 81726.

It is an arithmetic number, because the mean of its divisors is an integer number (653648).

Almost surely, 2^3431631 is an apocalyptic number.

3431631 is a deficient number, since it is larger than the sum of its proper divisors (1797553).

3431631 is a wasteful number, since it uses less digits than its factorization.

3431631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163421.

The product of its digits is 648, while the sum is 21.

The square root of 3431631 is about 1852.4661940235. The cubic root of 3431631 is about 150.8343284802.

Adding to 3431631 its reverse (1361343), we get a palindrome (4792974).

The spelling of 3431631 in words is "three million, four hundred thirty-one thousand, six hundred thirty-one".