1131420322144 has 144 divisors (see below), whose sum is σ = 2641642331328. Its totient is φ = 475457568768.

The previous prime is 1131420322139. The next prime is 1131420322159. The reversal of 1131420322144 is 4412230241311.

It is a happy number.

It is a super-2 number, since 2×1131420322144² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190055872 + ... + 190061824.

It is an arithmetic number, because the mean of its divisors is an integer number (18344738412).

Almost surely, 2^{1131420322144} is an apocalyptic number.

1131420322144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131420322144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1320821165664).

1131420322144 is an abundant number, since it is smaller than the sum of its proper divisors (1510222009184).

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

1131420322144 is a wasteful number, since it uses less digits than its factorization.

1131420322144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8317 (or 8302 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1131420322144 its reverse (4412230241311), we get a palindrome (5543650563455).

The spelling of 1131420322144 in words is "one trillion, one hundred thirty-one billion, four hundred twenty million, three hundred twenty-two thousand, one hundred forty-four".