30431422121 has 2 divisors, whose sum is σ = 30431422122. Its totient is φ = 30431422120.

The previous prime is 30431422117. The next prime is 30431422129. The reversal of 30431422121 is 12122413403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18168074521 + 12263347600 = 134789^2 + 110740^2 .

It is a cyclic number.

It is not a de Polignac number, because 30431422121 - 2² = 30431422117 is a prime.

It is not a weakly prime, because it can be changed into another prime (30431422129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15215711060 + 15215711061.

It is an arithmetic number, because the mean of its divisors is an integer number (15215711061).

Almost surely, 2^30431422121 is an apocalyptic number.

It is an amenable number.

30431422121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30431422121 is an equidigital number, since it uses as much as digits as its factorization.

30431422121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 30431422121 its reverse (12122413403), we get a palindrome (42553835524).

The spelling of 30431422121 in words is "thirty billion, four hundred thirty-one million, four hundred twenty-two thousand, one hundred twenty-one".