33012031081 has 2 divisors, whose sum is σ = 33012031082. Its totient is φ = 33012031080.

The previous prime is 33012031051. The next prime is 33012031133. The reversal of 33012031081 is 18013021033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32875491856 + 136539225 = 181316^2 + 11685^2 .

It is a cyclic number.

It is not a de Polignac number, because 33012031081 - 2³¹ = 30864547433 is a prime.

It is a super-2 number, since 2×33012031081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33012031001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16506015540 + 16506015541.

It is an arithmetic number, because the mean of its divisors is an integer number (16506015541).

Almost surely, 2^33012031081 is an apocalyptic number.

It is an amenable number.

33012031081 is a deficient number, since it is larger than the sum of its proper divisors (1).

33012031081 is an equidigital number, since it uses as much as digits as its factorization.

33012031081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

It can be divided in two parts, 330120 and 31081, that added together give a square (361201 = 601²).

The spelling of 33012031081 in words is "thirty-three billion, twelve million, thirty-one thousand, eighty-one".