31242342410561 has 2 divisors, whose sum is σ = 31242342410562. Its totient is φ = 31242342410560.

The previous prime is 31242342410549. The next prime is 31242342410563. The reversal of 31242342410561 is 16501424324213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30842817284161 + 399525126400 = 5553631^2 + 632080^2 .

It is a cyclic number.

It is not a de Polignac number, because 31242342410561 - 2⁶ = 31242342410497 is a prime.

It is a Sophie Germain prime.

Together with 31242342410563, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31242342410563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15621171205280 + 15621171205281.

It is an arithmetic number, because the mean of its divisors is an integer number (15621171205281).

Almost surely, 2^{31242342410561} is an apocalyptic number.

It is an amenable number.

31242342410561 is a deficient number, since it is larger than the sum of its proper divisors (1).

31242342410561 is an equidigital number, since it uses as much as digits as its factorization.

31242342410561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 31242342410561 its reverse (16501424324213), we get a palindrome (47743766734774).

The spelling of 31242342410561 in words is "thirty-one trillion, two hundred forty-two billion, three hundred forty-two million, four hundred ten thousand, five hundred sixty-one".