1140311240 has 32 divisors (see below), whose sum is σ = 2566729080. Its totient is φ = 455941632.

The previous prime is 1140311209. The next prime is 1140311267. The reversal of 1140311240 is 421130411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1136903524 + 3407716 = 33718^2 + 1846^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143204 + ... + 150956.

Almost surely, 2^1140311240 is an apocalyptic number.

1140311240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140311240 is an abundant number, since it is smaller than the sum of its proper divisors (1426417840).

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

1140311240 is a wasteful number, since it uses less digits than its factorization.

1140311240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11441 (or 11437 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1140311240 is about 33768.4947843400. The cubic root of 1140311240 is about 1044.7389868782.

Adding to 1140311240 its reverse (421130411), we get a palindrome (1561441651).

The spelling of 1140311240 in words is "one billion, one hundred forty million, three hundred eleven thousand, two hundred forty".