42311432321 has 2 divisors, whose sum is σ = 42311432322. Its totient is φ = 42311432320.

The previous prime is 42311432297. The next prime is 42311432347. The reversal of 42311432321 is 12323411324.

42311432321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (42311432347) can be obtained adding 42311432321 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24059422321 + 18252010000 = 155111^2 + 135100^2 .

It is a cyclic number.

It is not a de Polignac number, because 42311432321 - 2³⁴ = 25131563137 is a prime.

It is not a weakly prime, because it can be changed into another prime (42311432021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21155716160 + 21155716161.

It is an arithmetic number, because the mean of its divisors is an integer number (21155716161).

Almost surely, 2^42311432321 is an apocalyptic number.

It is an amenable number.

42311432321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42311432321 is an equidigital number, since it uses as much as digits as its factorization.

42311432321 is an evil number, because the sum of its binary digits is even.

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

Adding to 42311432321 its reverse (12323411324), we get a palindrome (54634843645).

The spelling of 42311432321 in words is "forty-two billion, three hundred eleven million, four hundred thirty-two thousand, three hundred twenty-one".