40001313423 has 12 divisors (see below), whose sum is σ = 54815538120. Its totient is φ = 25946795232.

The previous prime is 40001313421. The next prime is 40001313433. The reversal of 40001313423 is 32431310004.

It is not a de Polignac number, because 40001313423 - 2¹ = 40001313421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40001313423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40001313421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4865788 + ... + 4874001.

It is an arithmetic number, because the mean of its divisors is an integer number (4567961510).

Almost surely, 2^40001313423 is an apocalyptic number.

40001313423 is a deficient number, since it is larger than the sum of its proper divisors (14814224697).

40001313423 is an equidigital number, since it uses as much as digits as its factorization.

40001313423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9739866 (or 9739829 counting only the distinct ones).

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

Adding to 40001313423 its reverse (32431310004), we get a palindrome (72432623427).

The spelling of 40001313423 in words is "forty billion, one million, three hundred thirteen thousand, four hundred twenty-three".