1131133243240 has 256 divisors, whose sum is σ = 3468139960320. Its totient is φ = 320582845440.

The previous prime is 1131133243171. The next prime is 1131133243241. The reversal of 1131133243240 is 423423311311.

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

It is a junction number, because it is equal to n+sod(n) for n = 1131133243199 and 1131133243208.

It is not an unprimeable number, because it can be changed into a prime (1131133243241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2471859 + ... + 2893501.

It is an arithmetic number, because the mean of its divisors is an integer number (13547421720).

Almost surely, 2^{1131133243240} is an apocalyptic number.

1131133243240 is a gapful number since it is divisible by the number (10) 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 1131133243240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1734069980160).

1131133243240 is an abundant number, since it is smaller than the sum of its proper divisors (2337006717080).

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

1131133243240 is a wasteful number, since it uses less digits than its factorization.

1131133243240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421752 (or 421748 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 1131133243240 its reverse (423423311311), we get a palindrome (1554556554551).

The spelling of 1131133243240 in words is "one trillion, one hundred thirty-one billion, one hundred thirty-three million, two hundred forty-three thousand, two hundred forty".