3123231 has 4 divisors (see below), whose sum is σ = 4164312. Its totient is φ = 2082152.

The previous prime is 3123227. The next prime is 3123233. The reversal of 3123231 is 1323213.

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 3123231 - 2² = 3123227 is a prime.

It is a super-2 number, since 2×3123231² = 19509143758722, which contains 22 as substring.

It is a D-number.

3123231 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3123231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123233) 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 3 ways as a sum of consecutive naturals, for example, 520536 + ... + 520541.

It is an arithmetic number, because the mean of its divisors is an integer number (1041078).

Almost surely, 2^3123231 is an apocalyptic number.

3123231 is a deficient number, since it is larger than the sum of its proper divisors (1041081).

3123231 is a wasteful number, since it uses less digits than its factorization.

3123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041080.

The product of its digits is 108, while the sum is 15.

The square root of 3123231 is about 1767.2665333786. The cubic root of 3123231 is about 146.1732945708.

Adding to 3123231 its reverse (1323213), we get a palindrome (4446444).

The spelling of 3123231 in words is "three million, one hundred twenty-three thousand, two hundred thirty-one".