161306443 has 2 divisors, whose sum is σ = 161306444. Its totient is φ = 161306442.

The previous prime is 161306437. The next prime is 161306449. The reversal of 161306443 is 344603161.

It is a balanced prime because it is at equal distance from previous prime (161306437) and next prime (161306449).

It is a cyclic number.

It is not a de Polignac number, because 161306443 - 2¹³ = 161298251 is a prime.

It is not a weakly prime, because it can be changed into another prime (161306449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80653221 + 80653222.

It is an arithmetic number, because the mean of its divisors is an integer number (80653222).

Almost surely, 2^161306443 is an apocalyptic number.

161306443 is a deficient number, since it is larger than the sum of its proper divisors (1).

161306443 is an equidigital number, since it uses as much as digits as its factorization.

161306443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 161306443 is about 12700.6473457064. The cubic root of 161306443 is about 544.3571164283.

The spelling of 161306443 in words is "one hundred sixty-one million, three hundred six thousand, four hundred forty-three".