1311231031122 has 16 divisors (see below), whose sum is σ = 2622473860320. Its totient is φ = 437075044032.

The previous prime is 1311231031111. The next prime is 1311231031153. The reversal of 1311231031122 is 2211301321131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1715418 + ... + 2359050.

It is an arithmetic number, because the mean of its divisors is an integer number (163904616270).

Almost surely, 2^{1311231031122} is an apocalyptic number.

1311231031122 is an abundant number, since it is smaller than the sum of its proper divisors (1311242829198).

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

1311231031122 is a wasteful number, since it uses less digits than its factorization.

1311231031122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983177.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1311231031122 its reverse (2211301321131), we get a palindrome (3522532352253).

The spelling of 1311231031122 in words is "one trillion, three hundred eleven billion, two hundred thirty-one million, thirty-one thousand, one hundred twenty-two".