31344432440023 has 4 divisors (see below), whose sum is σ = 31569931954120. Its totient is φ = 31118932925928.

The previous prime is 31344432440021. The next prime is 31344432440047. The reversal of 31344432440023 is 32004423444313.

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 31344432440023 - 2¹ = 31344432440021 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 (31344432440021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112749756840 + ... + 112749757117.

It is an arithmetic number, because the mean of its divisors is an integer number (7892482988530).

Almost surely, 2^{31344432440023} is an apocalyptic number.

31344432440023 is a deficient number, since it is larger than the sum of its proper divisors (225499514097).

31344432440023 is a wasteful number, since it uses less digits than its factorization.

31344432440023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225499514096.

The product of its (nonzero) digits is 331776, while the sum is 37.

Adding to 31344432440023 its reverse (32004423444313), we get a palindrome (63348855884336).

The spelling of 31344432440023 in words is "thirty-one trillion, three hundred forty-four billion, four hundred thirty-two million, four hundred forty thousand, twenty-three".