33112131 has 16 divisors (see below), whose sum is σ = 48013056. Its totient is φ = 20176416.

The previous prime is 33112127. The next prime is 33112147. The reversal of 33112131 is 13121133.

It is not a de Polignac number, because 33112131 - 2² = 33112127 is a prime.

It is a super-2 number, since 2×33112131² = 2192826438722322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33112131.

It is not an unprimeable number, because it can be changed into a prime (33112181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105 + ... + 8138.

It is an arithmetic number, because the mean of its divisors is an integer number (3000816).

Almost surely, 2^33112131 is an apocalyptic number.

33112131 is a deficient number, since it is larger than the sum of its proper divisors (14900925).

33112131 is a wasteful number, since it uses less digits than its factorization.

33112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8362.

The product of its digits is 54, while the sum is 15.

The square root of 33112131 is about 5754.3141207272. The cubic root of 33112131 is about 321.1163192932.

Adding to 33112131 its reverse (13121133), we get a palindrome (46233264).

The spelling of 33112131 in words is "thirty-three million, one hundred twelve thousand, one hundred thirty-one".