161235433 has 16 divisors (see below), whose sum is σ = 170380800. Its totient is φ = 152380800.

The previous prime is 161235419. The next prime is 161235449. The reversal of 161235433 is 334532161.

It is a cyclic number.

It is not a de Polignac number, because 161235433 - 2⁵ = 161235401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161232433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309213 + ... + 309733.

It is an arithmetic number, because the mean of its divisors is an integer number (10648800).

Almost surely, 2^161235433 is an apocalyptic number.

It is an amenable number.

161235433 is a deficient number, since it is larger than the sum of its proper divisors (9145367).

161235433 is a wasteful number, since it uses less digits than its factorization.

161235433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768.

The product of its digits is 6480, while the sum is 28.

The square root of 161235433 is about 12697.8515111809. The cubic root of 161235433 is about 544.2772261035.

Adding to 161235433 its reverse (334532161), we get a palindrome (495767594).

The spelling of 161235433 in words is "one hundred sixty-one million, two hundred thirty-five thousand, four hundred thirty-three".