40003404331 has 4 divisors (see below), whose sum is σ = 43640077464. Its totient is φ = 36366731200.

The previous prime is 40003404299. The next prime is 40003404391. The reversal of 40003404331 is 13340430004.

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

It is a cyclic number.

It is not a de Polignac number, because 40003404331 - 2⁵ = 40003404299 is a prime.

It is a super-2 number, since 2×40003404331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40003404391) 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, 1818336550 + ... + 1818336571.

It is an arithmetic number, because the mean of its divisors is an integer number (10910019366).

Almost surely, 2^40003404331 is an apocalyptic number.

40003404331 is a deficient number, since it is larger than the sum of its proper divisors (3636673133).

40003404331 is a wasteful number, since it uses less digits than its factorization.

40003404331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636673132.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 40003404331 its reverse (13340430004), we get a palindrome (53343834335).

The spelling of 40003404331 in words is "forty billion, three million, four hundred four thousand, three hundred thirty-one".