40024351313 has 4 divisors (see below), whose sum is σ = 40089221220. Its totient is φ = 39959481408.

The previous prime is 40024351309. The next prime is 40024351369. The reversal of 40024351313 is 31315342004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16063788049 + 23960563264 = 126743^2 + 154792^2 .

It is a cyclic number.

It is not a de Polignac number, because 40024351313 - 2² = 40024351309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40024351303) 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, 32434028 + ... + 32435261.

It is an arithmetic number, because the mean of its divisors is an integer number (10022305305).

Almost surely, 2^40024351313 is an apocalyptic number.

It is an amenable number.

40024351313 is a deficient number, since it is larger than the sum of its proper divisors (64869907).

40024351313 is an equidigital number, since it uses as much as digits as its factorization.

40024351313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64869906.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 40024351313 its reverse (31315342004), we get a palindrome (71339693317).

The spelling of 40024351313 in words is "forty billion, twenty-four million, three hundred fifty-one thousand, three hundred thirteen".