40401320313 has 8 divisors (see below), whose sum is σ = 53900943328. Its totient is φ = 26917955424.

The previous prime is 40401320293. The next prime is 40401320341. The reversal of 40401320313 is 31302310404.

40401320313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40401320313 - 2¹² = 40401316217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40401320313.

It is not an unprimeable number, because it can be changed into a prime (40401320353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4058731 + ... + 4068672.

It is an arithmetic number, because the mean of its divisors is an integer number (6737617916).

Almost surely, 2^40401320313 is an apocalyptic number.

It is an amenable number.

40401320313 is a deficient number, since it is larger than the sum of its proper divisors (13499623015).

40401320313 is a wasteful number, since it uses less digits than its factorization.

40401320313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8129063.

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

Adding to 40401320313 its reverse (31302310404), we get a palindrome (71703630717).

Subtracting from 40401320313 its reverse (31302310404), we obtain a palindrome (9099009909).

The spelling of 40401320313 in words is "forty billion, four hundred one million, three hundred twenty thousand, three hundred thirteen".