40312331023 has 4 divisors (see below), whose sum is σ = 40367782000. Its totient is φ = 40256880048.

The previous prime is 40312330997. The next prime is 40312331029. The reversal of 40312331023 is 32013321304.

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-40312331023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40312330985 and 40312331003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40312331029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27724398 + ... + 27725851.

It is an arithmetic number, because the mean of its divisors is an integer number (10091945500).

Almost surely, 2^40312331023 is an apocalyptic number.

40312331023 is a deficient number, since it is larger than the sum of its proper divisors (55450977).

40312331023 is an equidigital number, since it uses as much as digits as its factorization.

40312331023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55450976.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 40312331023 its reverse (32013321304), we get a palindrome (72325652327).

The spelling of 40312331023 in words is "forty billion, three hundred twelve million, three hundred thirty-one thousand, twenty-three".