1131023311444 has 48 divisors (see below), whose sum is σ = 2181575265408. Its totient is φ = 509763316608.

The previous prime is 1131023311427. The next prime is 1131023311469. The reversal of 1131023311444 is 4441133201311.

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, 11055294 + ... + 11157130.

It is an arithmetic number, because the mean of its divisors is an integer number (45449484696).

Almost surely, 2^{1131023311444} is an apocalyptic number.

It is an amenable number.

1131023311444 is a deficient number, since it is larger than the sum of its proper divisors (1050551953964).

1131023311444 is a wasteful number, since it uses less digits than its factorization.

1131023311444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106864 (or 106862 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 1131023311444 its reverse (4441133201311), we get a palindrome (5572156512755).

The spelling of 1131023311444 in words is "one trillion, one hundred thirty-one billion, twenty-three million, three hundred eleven thousand, four hundred forty-four".