31344023 has 4 divisors (see below), whose sum is σ = 31362600. Its totient is φ = 31325448.

The previous prime is 31344011. The next prime is 31344029. The reversal of 31344023 is 32044313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31344023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31343986 and 31344004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6473 + ... + 10226.

It is an arithmetic number, because the mean of its divisors is an integer number (7840650).

Almost surely, 2^31344023 is an apocalyptic number.

31344023 is a deficient number, since it is larger than the sum of its proper divisors (18577).

31344023 is a wasteful number, since it uses less digits than its factorization.

31344023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18576.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 31344023 is about 5598.5733004043. The cubic root of 31344023 is about 315.2958436698.

Adding to 31344023 its reverse (32044313), we get a palindrome (63388336).

The spelling of 31344023 in words is "thirty-one million, three hundred forty-four thousand, twenty-three".