21430414332331 has 2 divisors, whose sum is σ = 21430414332332. Its totient is φ = 21430414332330.

The previous prime is 21430414332319. The next prime is 21430414332359. The reversal of 21430414332331 is 13323341403412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21430414332331 - 2³⁹ = 20880658518443 is a prime.

It is a super-2 number, since 2×21430414332331² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21430414335331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10715207166165 + 10715207166166.

It is an arithmetic number, because the mean of its divisors is an integer number (10715207166166).

Almost surely, 2^{21430414332331} is an apocalyptic number.

21430414332331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21430414332331 is an equidigital number, since it uses as much as digits as its factorization.

21430414332331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 21430414332331 its reverse (13323341403412), we get a palindrome (34753755735743).

The spelling of 21430414332331 in words is "twenty-one trillion, four hundred thirty billion, four hundred fourteen million, three hundred thirty-two thousand, three hundred thirty-one".