31973803045643 has 2 divisors, whose sum is σ = 31973803045644. Its totient is φ = 31973803045642.

The previous prime is 31973803045621. The next prime is 31973803045651. The reversal of 31973803045643 is 34654030837913.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31973803045643 - 2³⁴ = 31956623176459 is a prime.

It is not a weakly prime, because it can be changed into another prime (31973803044643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15986901522821 + 15986901522822.

It is an arithmetic number, because the mean of its divisors is an integer number (15986901522822).

Almost surely, 2^{31973803045643} is an apocalyptic number.

31973803045643 is a deficient number, since it is larger than the sum of its proper divisors (1).

31973803045643 is an equidigital number, since it uses as much as digits as its factorization.

31973803045643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19595520, while the sum is 56.

The spelling of 31973803045643 in words is "thirty-one trillion, nine hundred seventy-three billion, eight hundred three million, forty-five thousand, six hundred forty-three".