3131423 has 4 divisors (see below), whose sum is σ = 3136248. Its totient is φ = 3126600.

The previous prime is 3131419. The next prime is 3131431. The reversal of 3131423 is 3241313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3241313 = 919 ⋅3527.

It is a cyclic number.

It is not a de Polignac number, because 3131423 - 2² = 3131419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131483) 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, 1253 + ... + 2798.

It is an arithmetic number, because the mean of its divisors is an integer number (784062).

Almost surely, 2^3131423 is an apocalyptic number.

3131423 is a deficient number, since it is larger than the sum of its proper divisors (4825).

3131423 is an equidigital number, since it uses as much as digits as its factorization.

3131423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4824.

The product of its digits is 216, while the sum is 17.

The square root of 3131423 is about 1769.5827191742. The cubic root of 3131423 is about 146.3009835154.

Adding to 3131423 its reverse (3241313), we get a palindrome (6372736).

The spelling of 3131423 in words is "three million, one hundred thirty-one thousand, four hundred twenty-three".