31100434493 has 2 divisors, whose sum is σ = 31100434494. Its totient is φ = 31100434492.

The previous prime is 31100434447. The next prime is 31100434511. The reversal of 31100434493 is 39443400113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30695740804 + 404693689 = 175202^2 + 20117^2 .

It is a cyclic number.

It is not a de Polignac number, because 31100434493 - 2¹² = 31100430397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31100434793) 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, 15550217246 + 15550217247.

It is an arithmetic number, because the mean of its divisors is an integer number (15550217247).

Almost surely, 2^31100434493 is an apocalyptic number.

It is an amenable number.

31100434493 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100434493 is an equidigital number, since it uses as much as digits as its factorization.

31100434493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 31100434493 in words is "thirty-one billion, one hundred million, four hundred thirty-four thousand, four hundred ninety-three".