400422242431 has 2 divisors, whose sum is σ = 400422242432. Its totient is φ = 400422242430.

The previous prime is 400422242377. The next prime is 400422242449. The reversal of 400422242431 is 134242224004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400422242431 - 2⁷ = 400422242303 is a prime.

It is a super-2 number, since 2×400422242431² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400422242431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400422242531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200211121215 + 200211121216.

It is an arithmetic number, because the mean of its divisors is an integer number (200211121216).

Almost surely, 2^400422242431 is an apocalyptic number.

400422242431 is a deficient number, since it is larger than the sum of its proper divisors (1).

400422242431 is an equidigital number, since it uses as much as digits as its factorization.

400422242431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 400422242431 its reverse (134242224004), we get a palindrome (534664466435).

The spelling of 400422242431 in words is "four hundred billion, four hundred twenty-two million, two hundred forty-two thousand, four hundred thirty-one".