33144131 has 2 divisors, whose sum is σ = 33144132. Its totient is φ = 33144130.

The previous prime is 33144121. The next prime is 33144161. The reversal of 33144131 is 13144133.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33144131 is a prime.

It is a super-2 number, since 2×33144131² = 2197066839490322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (33144121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16572065 + 16572066.

It is an arithmetic number, because the mean of its divisors is an integer number (16572066).

Almost surely, 2^33144131 is an apocalyptic number.

33144131 is a deficient number, since it is larger than the sum of its proper divisors (1).

33144131 is an equidigital number, since it uses as much as digits as its factorization.

33144131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 33144131 is about 5757.0939717882. The cubic root of 33144131 is about 321.2197296696.

Adding to 33144131 its reverse (13144133), we get a palindrome (46288264).

The spelling of 33144131 in words is "thirty-three million, one hundred forty-four thousand, one hundred thirty-one".