40021432303231 has 4 divisors (see below), whose sum is σ = 40409989898512. Its totient is φ = 39632874707952.

The previous prime is 40021432303217. The next prime is 40021432303429. The reversal of 40021432303231 is 13230323412004.

It is a happy number.

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 40021432303231 - 2⁴¹ = 37822409047679 is a prime.

It is a super-2 number, since 2×40021432303231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40021432303231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40021432300231) 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, 194278797486 + ... + 194278797691.

It is an arithmetic number, because the mean of its divisors is an integer number (10102497474628).

Almost surely, 2^{40021432303231} is an apocalyptic number.

40021432303231 is a deficient number, since it is larger than the sum of its proper divisors (388557595281).

40021432303231 is a wasteful number, since it uses less digits than its factorization.

40021432303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388557595280.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 40021432303231 its reverse (13230323412004), we get a palindrome (53251755715235).

The spelling of 40021432303231 in words is "forty trillion, twenty-one billion, four hundred thirty-two million, three hundred three thousand, two hundred thirty-one".