31344423 has 32 divisors (see below), whose sum is σ = 48425472. Its totient is φ = 17846400.

The previous prime is 31344419. The next prime is 31344431. The reversal of 31344423 is 32444313.

It is not a de Polignac number, because 31344423 - 2² = 31344419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31344393 and 31344402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45961 + ... + 46637.

It is an arithmetic number, because the mean of its divisors is an integer number (1513296).

Almost surely, 2^31344423 is an apocalyptic number.

31344423 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31344423 is a deficient number, since it is larger than the sum of its proper divisors (17081049).

31344423 is a wasteful number, since it uses less digits than its factorization.

31344423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775.

The product of its digits is 3456, while the sum is 24.

The square root of 31344423 is about 5598.6090236772. The cubic root of 31344423 is about 315.2971848910.

Adding to 31344423 its reverse (32444313), we get a palindrome (63788736).

It can be divided in two parts, 3134 and 4423, that added together give a palindrome (7557).

The spelling of 31344423 in words is "thirty-one million, three hundred forty-four thousand, four hundred twenty-three".