161233447 has 2 divisors, whose sum is σ = 161233448. Its totient is φ = 161233446.

The previous prime is 161233439. The next prime is 161233469. The reversal of 161233447 is 744332161.

161233447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161233447 - 2³ = 161233439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161233847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80616723 + 80616724.

It is an arithmetic number, because the mean of its divisors is an integer number (80616724).

Almost surely, 2^161233447 is an apocalyptic number.

161233447 is a deficient number, since it is larger than the sum of its proper divisors (1).

161233447 is an equidigital number, since it uses as much as digits as its factorization.

161233447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 161233447 is about 12697.7733087341. The cubic root of 161233447 is about 544.2749914023.

The spelling of 161233447 in words is "one hundred sixty-one million, two hundred thirty-three thousand, four hundred forty-seven".