1031012012191 has 16 divisors (see below), whose sum is σ = 1247638973760. Its totient is φ = 831722250240.

The previous prime is 1031012012171. The next prime is 1031012012197. The reversal of 1031012012191 is 1912102101301.

It is not a de Polignac number, because 1031012012191 - 2²³ = 1031003623583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031012012197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8384271 + ... + 8506351.

It is an arithmetic number, because the mean of its divisors is an integer number (77977435860).

Almost surely, 2^{1031012012191} is an apocalyptic number.

1031012012191 is a deficient number, since it is larger than the sum of its proper divisors (216626961569).

1031012012191 is a wasteful number, since it uses less digits than its factorization.

1031012012191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193074.

The product of its (nonzero) digits is 108, while the sum is 22.

Adding to 1031012012191 its reverse (1912102101301), we get a palindrome (2943114113492).

The spelling of 1031012012191 in words is "one trillion, thirty-one billion, twelve million, twelve thousand, one hundred ninety-one".