3531231 has 24 divisors (see below), whose sum is σ = 5677776. Its totient is φ = 2096640.

The previous prime is 3531211. The next prime is 3531233. The reversal of 3531231 is 1321353.

It is a de Polignac number, because none of the positive numbers 2^k-3531231 is a prime.

It is a super-2 number, since 2×3531231² = 24939184750722, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3531233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4911 + ... + 5583.

It is an arithmetic number, because the mean of its divisors is an integer number (236574).

Almost surely, 2^3531231 is an apocalyptic number.

3531231 is a deficient number, since it is larger than the sum of its proper divisors (2146545).

3531231 is a wasteful number, since it uses less digits than its factorization.

3531231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 740 counting only the distinct ones).

The product of its digits is 270, while the sum is 18.

The square root of 3531231 is about 1879.1569918450. The cubic root of 3531231 is about 152.2797106068.

Adding to 3531231 its reverse (1321353), we get a palindrome (4852584).

The spelling of 3531231 in words is "three million, five hundred thirty-one thousand, two hundred thirty-one".