161334287 has 2 divisors, whose sum is σ = 161334288. Its totient is φ = 161334286.

The previous prime is 161334227. The next prime is 161334331. The reversal of 161334287 is 782433161.

161334287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161334287 - 2⁸ = 161334031 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161334227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80667143 + 80667144.

It is an arithmetic number, because the mean of its divisors is an integer number (80667144).

Almost surely, 2^161334287 is an apocalyptic number.

161334287 is a deficient number, since it is larger than the sum of its proper divisors (1).

161334287 is an equidigital number, since it uses as much as digits as its factorization.

161334287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 161334287 is about 12701.7434630054. The cubic root of 161334287 is about 544.3884361269.

The spelling of 161334287 in words is "one hundred sixty-one million, three hundred thirty-four thousand, two hundred eighty-seven".