33280131 has 16 divisors (see below), whose sum is σ = 46440864. Its totient is φ = 21176064.

The previous prime is 33280129. The next prime is 33280133. The reversal of 33280131 is 13108233.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (33280129) and next prime (33280133).

It is not a de Polignac number, because 33280131 - 2¹ = 33280129 is a prime.

It is a super-2 number, since 2×33280131² = 2215134238754322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33280098 and 33280107.

It is not an unprimeable number, because it can be changed into a prime (33280133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3055 + ... + 8711.

It is an arithmetic number, because the mean of its divisors is an integer number (2902554).

Almost surely, 2^33280131 is an apocalyptic number.

33280131 is a deficient number, since it is larger than the sum of its proper divisors (13160733).

33280131 is a wasteful number, since it uses less digits than its factorization.

33280131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5750.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 33280131 is about 5768.8933947509. The cubic root of 33280131 is about 321.6584827339.

Adding to 33280131 its reverse (13108233), we get a palindrome (46388364).

It can be divided in two parts, 33280 and 131, that added together give a triangular number (33411 = T₂₅₈).

The spelling of 33280131 in words is "thirty-three million, two hundred eighty thousand, one hundred thirty-one".