31523832449 has 2 divisors, whose sum is σ = 31523832450. Its totient is φ = 31523832448.

The previous prime is 31523832443. The next prime is 31523832563. The reversal of 31523832449 is 94423832513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30854679025 + 669153424 = 175655^2 + 25868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31523832449 is a prime.

It is not a weakly prime, because it can be changed into another prime (31523832443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15761916224 + 15761916225.

It is an arithmetic number, because the mean of its divisors is an integer number (15761916225).

Almost surely, 2^31523832449 is an apocalyptic number.

It is an amenable number.

31523832449 is a deficient number, since it is larger than the sum of its proper divisors (1).

31523832449 is an equidigital number, since it uses as much as digits as its factorization.

31523832449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 44.

The spelling of 31523832449 in words is "thirty-one billion, five hundred twenty-three million, eight hundred thirty-two thousand, four hundred forty-nine".