40042432313 has 4 divisors (see below), whose sum is σ = 43122619428. Its totient is φ = 36962245200.

The previous prime is 40042432289. The next prime is 40042432373. The reversal of 40042432313 is 31323424004.

40042432313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 24369395449 + 15673036864 = 156107^2 + 125192^2 .

It is a cyclic number.

It is not a de Polignac number, because 40042432313 - 2⁸ = 40042432057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40042432373) 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, 1540093538 + ... + 1540093563.

It is an arithmetic number, because the mean of its divisors is an integer number (10780654857).

Almost surely, 2^40042432313 is an apocalyptic number.

It is an amenable number.

40042432313 is a deficient number, since it is larger than the sum of its proper divisors (3080187115).

40042432313 is a wasteful number, since it uses less digits than its factorization.

40042432313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080187114.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 40042432313 its reverse (31323424004), we get a palindrome (71365856317).

The spelling of 40042432313 in words is "forty billion, forty-two million, four hundred thirty-two thousand, three hundred thirteen".