31768447229 has 2 divisors, whose sum is σ = 31768447230. Its totient is φ = 31768447228.

The previous prime is 31768447219. The next prime is 31768447253. The reversal of 31768447229 is 92274486713.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16018699225 + 15749748004 = 126565^2 + 125498^2 .

It is a cyclic number.

It is not a de Polignac number, because 31768447229 - 2⁸ = 31768446973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31768447219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15884223614 + 15884223615.

It is an arithmetic number, because the mean of its divisors is an integer number (15884223615).

Almost surely, 2^31768447229 is an apocalyptic number.

It is an amenable number.

31768447229 is a deficient number, since it is larger than the sum of its proper divisors (1).

31768447229 is an equidigital number, since it uses as much as digits as its factorization.

31768447229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 53.

The spelling of 31768447229 in words is "thirty-one billion, seven hundred sixty-eight million, four hundred forty-seven thousand, two hundred twenty-nine".