1031544099991 has 2 divisors, whose sum is σ = 1031544099992. Its totient is φ = 1031544099990.

The previous prime is 1031544099983. The next prime is 1031544100009. The reversal of 1031544099991 is 1999904451301.

1031544099991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1031544099991 - 2³ = 1031544099983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031544099931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515772049995 + 515772049996.

It is an arithmetic number, because the mean of its divisors is an integer number (515772049996).

Almost surely, 2^{1031544099991} is an apocalyptic number.

1031544099991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031544099991 is an equidigital number, since it uses as much as digits as its factorization.

1031544099991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1574640, while the sum is 55.

The spelling of 1031544099991 in words is "one trillion, thirty-one billion, five hundred forty-four million, ninety-nine thousand, nine hundred ninety-one".