31036281113 has 2 divisors, whose sum is σ = 31036281114. Its totient is φ = 31036281112.

The previous prime is 31036281091. The next prime is 31036281169. The reversal of 31036281113 is 31118263013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28977571984 + 2058709129 = 170228^2 + 45373^2 .

It is a cyclic number.

It is not a de Polignac number, because 31036281113 - 2⁸ = 31036280857 is a prime.

It is not a weakly prime, because it can be changed into another prime (31036281173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15518140556 + 15518140557.

It is an arithmetic number, because the mean of its divisors is an integer number (15518140557).

Almost surely, 2^31036281113 is an apocalyptic number.

It is an amenable number.

31036281113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31036281113 is an equidigital number, since it uses as much as digits as its factorization.

31036281113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 31036281113 in words is "thirty-one billion, thirty-six million, two hundred eighty-one thousand, one hundred thirteen".