31100113213313 has 2 divisors, whose sum is σ = 31100113213314. Its totient is φ = 31100113213312.

The previous prime is 31100113213307. The next prime is 31100113213363. The reversal of 31100113213313 is 31331231100113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28331007545344 + 2769105667969 = 5322688^2 + 1664063^2 .

It is a cyclic number.

It is not a de Polignac number, because 31100113213313 - 2⁶ = 31100113213249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31100113213363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15550056606656 + 15550056606657.

It is an arithmetic number, because the mean of its divisors is an integer number (15550056606657).

Almost surely, 2^{31100113213313} is an apocalyptic number.

It is an amenable number.

31100113213313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100113213313 is an equidigital number, since it uses as much as digits as its factorization.

31100113213313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 31100113213313 its reverse (31331231100113), we get a palindrome (62431344313426).

The spelling of 31100113213313 in words is "thirty-one trillion, one hundred billion, one hundred thirteen million, two hundred thirteen thousand, three hundred thirteen".