31311012033149 has 2 divisors, whose sum is σ = 31311012033150. Its totient is φ = 31311012033148.

The previous prime is 31311012033113. The next prime is 31311012033229. The reversal of 31311012033149 is 94133021011313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31249944727225 + 61067305924 = 5590165^2 + 247118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31311012033149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31311012033109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655506016574 + 15655506016575.

It is an arithmetic number, because the mean of its divisors is an integer number (15655506016575).

Almost surely, 2^{31311012033149} is an apocalyptic number.

It is an amenable number.

31311012033149 is a deficient number, since it is larger than the sum of its proper divisors (1).

31311012033149 is an equidigital number, since it uses as much as digits as its factorization.

31311012033149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 31311012033149 in words is "thirty-one trillion, three hundred eleven billion, twelve million, thirty-three thousand, one hundred forty-nine".