1131040344 has 48 divisors (see below), whose sum is σ = 3289253400. Its totient is φ = 323154048.

The previous prime is 1131040343. The next prime is 1131040349. The reversal of 1131040344 is 4430401311.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1131040344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131040343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 479709 + ... + 482060.

Almost surely, 2^1131040344 is an apocalyptic number.

1131040344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1131040344 is an abundant number, since it is smaller than the sum of its proper divisors (2158213056).

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

1131040344 is a wasteful number, since it uses less digits than its factorization.

1131040344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961792 (or 961781 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1131040344 is about 33630.9432517139. The cubic root of 1131040344 is about 1041.8999858570.

Adding to 1131040344 its reverse (4430401311), we get a palindrome (5561441655).

The spelling of 1131040344 in words is "one billion, one hundred thirty-one million, forty thousand, three hundred forty-four".