40321131405 has 8 divisors (see below), whose sum is σ = 64513810272. Its totient is φ = 21504603408.

The previous prime is 40321131391. The next prime is 40321131421. The reversal of 40321131405 is 50413112304.

It is a happy number.

40321131405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40321131405 - 2²¹ = 40319034253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1344037699 + ... + 1344037728.

It is an arithmetic number, because the mean of its divisors is an integer number (8064226284).

Almost surely, 2^40321131405 is an apocalyptic number.

It is an amenable number.

40321131405 is a deficient number, since it is larger than the sum of its proper divisors (24192678867).

40321131405 is a wasteful number, since it uses less digits than its factorization.

40321131405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688075435.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 40321131405 its reverse (50413112304), we get a palindrome (90734243709).

The spelling of 40321131405 in words is "forty billion, three hundred twenty-one million, one hundred thirty-one thousand, four hundred five".