1100231140 has 12 divisors (see below), whose sum is σ = 2310485436. Its totient is φ = 440092448.

The previous prime is 1100231129. The next prime is 1100231147. The reversal of 1100231140 is 411320011.

It can be written as a sum of positive squares in 2 ways, for example, as 537497856 + 562733284 = 23184^2 + 23722^2 .

It is a super-2 number, since 2×1100231140² = 2421017122851399200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1100231140.

It is not an unprimeable number, because it can be changed into a prime (1100231147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27505759 + ... + 27505798.

It is an arithmetic number, because the mean of its divisors is an integer number (192540453).

Almost surely, 2^1100231140 is an apocalyptic number.

1100231140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100231140 is an abundant number, since it is smaller than the sum of its proper divisors (1210254296).

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

1100231140 is a wasteful number, since it uses less digits than its factorization.

1100231140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55011566 (or 55011564 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1100231140 is about 33169.7322871319. The cubic root of 1100231140 is about 1032.3524137944.

Adding to 1100231140 its reverse (411320011), we get a palindrome (1511551151).

The spelling of 1100231140 in words is "one billion, one hundred million, two hundred thirty-one thousand, one hundred forty".