1031131122112 has 112 divisors (see below), whose sum is σ = 2569734865600. Its totient is φ = 407919891456.

The previous prime is 1031131122037. The next prime is 1031131122127. The reversal of 1031131122112 is 2112211311301.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 1031131122112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1521243 + ... + 2091994.

It is an arithmetic number, because the mean of its divisors is an integer number (22944061300).

Almost surely, 2^{1031131122112} is an apocalyptic number.

It is an amenable number.

1031131122112 is an abundant number, since it is smaller than the sum of its proper divisors (1538603743488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031131122112 is an equidigital number, since it uses as much as digits as its factorization.

1031131122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613283 (or 3613259 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1031131122112 its reverse (2112211311301), we get a palindrome (3143342433413).

The spelling of 1031131122112 in words is "one trillion, thirty-one billion, one hundred thirty-one million, one hundred twenty-two thousand, one hundred twelve".