33161316 has 12 divisors (see below), whose sum is σ = 77376432. Its totient is φ = 11053768.

The previous prime is 33161309. The next prime is 33161321. The reversal of 33161316 is 61316133.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381710 + ... + 1381733.

It is an arithmetic number, because the mean of its divisors is an integer number (6448036).

Almost surely, 2^33161316 is an apocalyptic number.

It is an amenable number.

33161316 is an abundant number, since it is smaller than the sum of its proper divisors (44215116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33161316 is a wasteful number, since it uses less digits than its factorization.

33161316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763450 (or 2763448 counting only the distinct ones).

The product of its digits is 972, while the sum is 24.

The square root of 33161316 is about 5758.5862848446. The cubic root of 33161316 is about 321.2752368048.

Adding to 33161316 its reverse (61316133), we get a palindrome (94477449).

The spelling of 33161316 in words is "thirty-three million, one hundred sixty-one thousand, three hundred sixteen".