31344123 has 4 divisors (see below), whose sum is σ = 41792168. Its totient is φ = 20896080.

The previous prime is 31344121. The next prime is 31344139. The reversal of 31344123 is 32144313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32144313 = 3 ⋅10714771.

It is not a de Polignac number, because 31344123 - 2¹ = 31344121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31344123.

It is not an unprimeable number, because it can be changed into a prime (31344121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5224018 + ... + 5224023.

It is an arithmetic number, because the mean of its divisors is an integer number (10448042).

Almost surely, 2^31344123 is an apocalyptic number.

31344123 is a deficient number, since it is larger than the sum of its proper divisors (10448045).

31344123 is a wasteful number, since it uses less digits than its factorization.

31344123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10448044.

The product of its digits is 864, while the sum is 21.

The square root of 31344123 is about 5598.5822312439. The cubic root of 31344123 is about 315.2961789762.

Adding to 31344123 its reverse (32144313), we get a palindrome (63488436).

The spelling of 31344123 in words is "thirty-one million, three hundred forty-four thousand, one hundred twenty-three".