40500221431 has 2 divisors, whose sum is σ = 40500221432. Its totient is φ = 40500221430.

The previous prime is 40500221341. The next prime is 40500221441. The reversal of 40500221431 is 13412200504.

40500221431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (40500221341) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40500221431 - 2¹⁷ = 40500090359 is a prime.

It is a super-2 number, since 2×40500221431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40500221441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20250110715 + 20250110716.

It is an arithmetic number, because the mean of its divisors is an integer number (20250110716).

Almost surely, 2^40500221431 is an apocalyptic number.

40500221431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40500221431 is an equidigital number, since it uses as much as digits as its factorization.

40500221431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 40500221431 its reverse (13412200504), we get a palindrome (53912421935).

The spelling of 40500221431 in words is "forty billion, five hundred million, two hundred twenty-one thousand, four hundred thirty-one".