1140531345 has 24 divisors (see below), whose sum is σ = 1977706536. Its totient is φ = 608041728.

The previous prime is 1140531319. The next prime is 1140531349. The reversal of 1140531345 is 5431350411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33039504 + 1107491841 = 5748^2 + 33279^2 .

It is not a de Polignac number, because 1140531345 - 2¹⁵ = 1140498577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1140531349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220509 + ... + 225621.

It is an arithmetic number, because the mean of its divisors is an integer number (82404439).

Almost surely, 2^1140531345 is an apocalyptic number.

1140531345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1140531345 is a deficient number, since it is larger than the sum of its proper divisors (837175191).

1140531345 is a wasteful number, since it uses less digits than its factorization.

1140531345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10081 (or 10078 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1140531345 is about 33771.7536559771. The cubic root of 1140531345 is about 1044.8062017089.

Adding to 1140531345 its reverse (5431350411), we get a palindrome (6571881756).

The spelling of 1140531345 in words is "one billion, one hundred forty million, five hundred thirty-one thousand, three hundred forty-five".