40421431313 has 8 divisors (see below), whose sum is σ = 40460980032. Its totient is φ = 40381906096.

The previous prime is 40421431223. The next prime is 40421431331. The reversal of 40421431313 is 31313412404.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40421431313 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 (40421431363) 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, 5917406 + ... + 5924232.

It is an arithmetic number, because the mean of its divisors is an integer number (5057622504).

Almost surely, 2^40421431313 is an apocalyptic number.

It is an amenable number.

40421431313 is a deficient number, since it is larger than the sum of its proper divisors (39548719).

40421431313 is a wasteful number, since it uses less digits than its factorization.

40421431313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11751.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 40421431313 its reverse (31313412404), we get a palindrome (71734843717).

The spelling of 40421431313 in words is "forty billion, four hundred twenty-one million, four hundred thirty-one thousand, three hundred thirteen".