31100243353 has 2 divisors, whose sum is σ = 31100243354. Its totient is φ = 31100243352.

The previous prime is 31100243351. The next prime is 31100243407. The reversal of 31100243353 is 35334200113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25578564489 + 5521678864 = 159933^2 + 74308^2 .

It is a cyclic number.

It is not a de Polignac number, because 31100243353 - 2¹ = 31100243351 is a prime.

Together with 31100243351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31100243351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15550121676 + 15550121677.

It is an arithmetic number, because the mean of its divisors is an integer number (15550121677).

Almost surely, 2^31100243353 is an apocalyptic number.

It is an amenable number.

31100243353 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100243353 is an equidigital number, since it uses as much as digits as its factorization.

31100243353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 31100243353 its reverse (35334200113), we get a palindrome (66434443466).

The spelling of 31100243353 in words is "thirty-one billion, one hundred million, two hundred forty-three thousand, three hundred fifty-three".