33012131 has 4 divisors (see below), whose sum is σ = 33264264. Its totient is φ = 32760000.

The previous prime is 33012127. The next prime is 33012137. The reversal of 33012131 is 13121033.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33012131 - 2² = 33012127 is a prime.

It is a super-2 number, since 2×33012131² = 2179601586322322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33012137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125870 + ... + 126131.

It is an arithmetic number, because the mean of its divisors is an integer number (8316066).

Almost surely, 2^33012131 is an apocalyptic number.

33012131 is a deficient number, since it is larger than the sum of its proper divisors (252133).

33012131 is a wasteful number, since it uses less digits than its factorization.

33012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252132.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 33012131 is about 5745.6184175422. The cubic root of 33012131 is about 320.7927318198.

Adding to 33012131 its reverse (13121033), we get a palindrome (46133164).

The spelling of 33012131 in words is "thirty-three million, twelve thousand, one hundred thirty-one".