43321312427 has 2 divisors, whose sum is σ = 43321312428. Its totient is φ = 43321312426.

The previous prime is 43321312417. The next prime is 43321312481. The reversal of 43321312427 is 72421312334.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43321312427 - 2⁸ = 43321312171 is a prime.

It is a super-2 number, since 2×43321312427² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43321312393 and 43321312402.

It is not a weakly prime, because it can be changed into another prime (43321312417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21660656213 + 21660656214.

It is an arithmetic number, because the mean of its divisors is an integer number (21660656214).

Almost surely, 2^43321312427 is an apocalyptic number.

43321312427 is a deficient number, since it is larger than the sum of its proper divisors (1).

43321312427 is an equidigital number, since it uses as much as digits as its factorization.

43321312427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 32.

The spelling of 43321312427 in words is "forty-three billion, three hundred twenty-one million, three hundred twelve thousand, four hundred twenty-seven".