33000131161 has 2 divisors, whose sum is σ = 33000131162. Its totient is φ = 33000131160.

The previous prime is 33000131159. The next prime is 33000131221. The reversal of 33000131161 is 16113100033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28385510400 + 4614620761 = 168480^2 + 67931^2 .

It is a cyclic number.

It is not a de Polignac number, because 33000131161 - 2¹ = 33000131159 is a prime.

Together with 33000131159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33000131261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16500065580 + 16500065581.

It is an arithmetic number, because the mean of its divisors is an integer number (16500065581).

Almost surely, 2^33000131161 is an apocalyptic number.

It is an amenable number.

33000131161 is a deficient number, since it is larger than the sum of its proper divisors (1).

33000131161 is an equidigital number, since it uses as much as digits as its factorization.

33000131161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 33000131161 its reverse (16113100033), we get a palindrome (49113231194).

The spelling of 33000131161 in words is "thirty-three billion, one hundred thirty-one thousand, one hundred sixty-one".