31536939504893 has 2 divisors, whose sum is σ = 31536939504894. Its totient is φ = 31536939504892.

The previous prime is 31536939504803. The next prime is 31536939504953. The reversal of 31536939504893 is 39840593963513.

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., 22837283072569 + 8699656432324 = 4778837^2 + 2949518^2 .

It is a cyclic number.

It is not a de Polignac number, because 31536939504893 - 2¹⁰ = 31536939503869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31536939504803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15768469752446 + 15768469752447.

It is an arithmetic number, because the mean of its divisors is an integer number (15768469752447).

Almost surely, 2^{31536939504893} is an apocalyptic number.

It is an amenable number.

31536939504893 is a deficient number, since it is larger than the sum of its proper divisors (1).

31536939504893 is an equidigital number, since it uses as much as digits as its factorization.

31536939504893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 283435200, while the sum is 68.

The spelling of 31536939504893 in words is "thirty-one trillion, five hundred thirty-six billion, nine hundred thirty-nine million, five hundred four thousand, eight hundred ninety-three".