1031971361866 has 8 divisors (see below), whose sum is σ = 1566607127904. Its totient is φ = 509768985900.

The previous prime is 1031971361831. The next prime is 1031971361867. The reversal of 1031971361866 is 6681631791301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1031971361867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3108347310 + ... + 3108347641.

It is an arithmetic number, because the mean of its divisors is an integer number (195825890988).

Almost surely, 2^{1031971361866} is an apocalyptic number.

1031971361866 is a deficient number, since it is larger than the sum of its proper divisors (534635766038).

1031971361866 is an equidigital number, since it uses as much as digits as its factorization.

1031971361866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6216695036.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 1031971361866 in words is "one trillion, thirty-one billion, nine hundred seventy-one million, three hundred sixty-one thousand, eight hundred sixty-six".