40344230213 has 24 divisors (see below), whose sum is σ = 47459706624. Its totient is φ = 34193140800.

The previous prime is 40344230209. The next prime is 40344230231. The reversal of 40344230213 is 31203244304.

It is not a de Polignac number, because 40344230213 - 2² = 40344230209 is a prime.

It is a super-2 number, since 2×40344230213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40344230233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1792556 + ... + 1814922.

It is an arithmetic number, because the mean of its divisors is an integer number (1977487776).

Almost surely, 2^40344230213 is an apocalyptic number.

It is an amenable number.

40344230213 is a deficient number, since it is larger than the sum of its proper divisors (7115476411).

40344230213 is a wasteful number, since it uses less digits than its factorization.

40344230213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22793 (or 22786 counting only the distinct ones).

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

Adding to 40344230213 its reverse (31203244304), we get a palindrome (71547474517).

The spelling of 40344230213 in words is "forty billion, three hundred forty-four million, two hundred thirty thousand, two hundred thirteen".