31742888603197 has 2 divisors, whose sum is σ = 31742888603198. Its totient is φ = 31742888603196.

The previous prime is 31742888603149. The next prime is 31742888603243. The reversal of 31742888603197 is 79130688824713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31594809097476 + 148079505721 = 5620926^2 + 384811^2 .

It is an emirp because it is prime and its reverse (79130688824713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31742888603197 - 2²⁷ = 31742754385469 is a prime.

It is a super-2 number, since 2×31742888603197² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31742888601197) 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, 15871444301598 + 15871444301599.

It is an arithmetic number, because the mean of its divisors is an integer number (15871444301599).

Almost surely, 2^{31742888603197} is an apocalyptic number.

It is an amenable number.

31742888603197 is a deficient number, since it is larger than the sum of its proper divisors (1).

31742888603197 is an equidigital number, since it uses as much as digits as its factorization.

31742888603197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97542144, while the sum is 67.

The spelling of 31742888603197 in words is "thirty-one trillion, seven hundred forty-two billion, eight hundred eighty-eight million, six hundred three thousand, one hundred ninety-seven".