31343223343997 has 2 divisors, whose sum is σ = 31343223343998. Its totient is φ = 31343223343996.

The previous prime is 31343223343951. The next prime is 31343223344033. The reversal of 31343223343997 is 79934332234313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25415098912921 + 5928124431076 = 5041339^2 + 2434774^2 .

It is an emirp because it is prime and its reverse (79934332234313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31343223343997 - 2⁶ = 31343223343933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31343223343907) 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, 15671611671998 + 15671611671999.

It is an arithmetic number, because the mean of its divisors is an integer number (15671611671999).

Almost surely, 2^{31343223343997} is an apocalyptic number.

It is an amenable number.

31343223343997 is a deficient number, since it is larger than the sum of its proper divisors (1).

31343223343997 is an equidigital number, since it uses as much as digits as its factorization.

31343223343997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26453952, while the sum is 56.

The spelling of 31343223343997 in words is "thirty-one trillion, three hundred forty-three billion, two hundred twenty-three million, three hundred forty-three thousand, nine hundred ninety-seven".