161335283 has 4 divisors (see below), whose sum is σ = 161395920. Its totient is φ = 161274648.

The previous prime is 161335211. The next prime is 161335297. The reversal of 161335283 is 382533161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382533161 = 71 ⋅5387791.

It is a cyclic number.

It is not a de Polignac number, because 161335283 - 2¹⁸ = 161073139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161335583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26135 + ... + 31712.

It is an arithmetic number, because the mean of its divisors is an integer number (40348980).

Almost surely, 2^161335283 is an apocalyptic number.

161335283 is a deficient number, since it is larger than the sum of its proper divisors (60637).

161335283 is an equidigital number, since it uses as much as digits as its factorization.

161335283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60636.

The product of its digits is 12960, while the sum is 32.

The square root of 161335283 is about 12701.7826701609. The cubic root of 161335283 is about 544.3895563884.

The spelling of 161335283 in words is "one hundred sixty-one million, three hundred thirty-five thousand, two hundred eighty-three".