31842520360661 has 2 divisors, whose sum is σ = 31842520360662. Its totient is φ = 31842520360660.

The previous prime is 31842520360589. The next prime is 31842520360663. The reversal of 31842520360661 is 16606302524813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25189056076900 + 6653464283761 = 5018870^2 + 2579431^2 .

It is a cyclic number.

It is not a de Polignac number, because 31842520360661 - 2³⁸ = 31567642453717 is a prime.

It is a super-2 number, since 2×31842520360661² (a number of 28 digits) contains 22 as substring.

Together with 31842520360663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31842520360663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15921260180330 + 15921260180331.

It is an arithmetic number, because the mean of its divisors is an integer number (15921260180331).

Almost surely, 2^{31842520360661} is an apocalyptic number.

It is an amenable number.

31842520360661 is a deficient number, since it is larger than the sum of its proper divisors (1).

31842520360661 is an equidigital number, since it uses as much as digits as its factorization.

31842520360661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 31842520360661 in words is "thirty-one trillion, eight hundred forty-two billion, five hundred twenty million, three hundred sixty thousand, six hundred sixty-one".