1151331340 has 24 divisors (see below), whose sum is σ = 2418654672. Its totient is φ = 460368960.

The previous prime is 1151331299. The next prime is 1151331343. The reversal of 1151331340 is 431331511.

It is not an unprimeable number, because it can be changed into a prime (1151331343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58882 + ... + 75958.

It is an arithmetic number, because the mean of its divisors is an integer number (100777278).

Almost surely, 2^1151331340 is an apocalyptic number.

1151331340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151331340 is an abundant number, since it is smaller than the sum of its proper divisors (1267323332).

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

1151331340 is a wasteful number, since it uses less digits than its factorization.

1151331340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20457 (or 20455 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1151331340 is about 33931.2737750884. The cubic root of 1151331340 is about 1048.0936960981.

Adding to 1151331340 its reverse (431331511), we get a palindrome (1582662851).

The spelling of 1151331340 in words is "one billion, one hundred fifty-one million, three hundred thirty-one thousand, three hundred forty".