31956770793029 has 2 divisors, whose sum is σ = 31956770793030. Its totient is φ = 31956770793028.

The previous prime is 31956770793007. The next prime is 31956770793041. The reversal of 31956770793029 is 92039707765913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30302272562500 + 1654498230529 = 5504750^2 + 1286273^2 .

It is a cyclic number.

It is not a de Polignac number, because 31956770793029 - 2³² = 31952475825733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31956770793029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31956770793049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15978385396514 + 15978385396515.

It is an arithmetic number, because the mean of its divisors is an integer number (15978385396515).

Almost surely, 2^{31956770793029} is an apocalyptic number.

It is an amenable number.

31956770793029 is a deficient number, since it is larger than the sum of its proper divisors (1).

31956770793029 is an equidigital number, since it uses as much as digits as its factorization.

31956770793029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135025380, while the sum is 68.

The spelling of 31956770793029 in words is "thirty-one trillion, nine hundred fifty-six billion, seven hundred seventy million, seven hundred ninety-three thousand, twenty-nine".