31522043102497 has 2 divisors, whose sum is σ = 31522043102498. Its totient is φ = 31522043102496.

The previous prime is 31522043102483. The next prime is 31522043102507. The reversal of 31522043102497 is 79420134022513.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29449246544656 + 2072796557841 = 5426716^2 + 1439721^2 .

It is an emirp because it is prime and its reverse (79420134022513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31522043102497 is a prime.

It is not a weakly prime, because it can be changed into another prime (31522043102447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15761021551248 + 15761021551249.

It is an arithmetic number, because the mean of its divisors is an integer number (15761021551249).

Almost surely, 2^{31522043102497} is an apocalyptic number.

It is an amenable number.

31522043102497 is a deficient number, since it is larger than the sum of its proper divisors (1).

31522043102497 is an equidigital number, since it uses as much as digits as its factorization.

31522043102497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 31522043102497 in words is "thirty-one trillion, five hundred twenty-two billion, forty-three million, one hundred two thousand, four hundred ninety-seven".