1151231345 has 32 divisors (see below), whose sum is σ = 1581327360. Its totient is φ = 796896000.

The previous prime is 1151231339. The next prime is 1151231359. The reversal of 1151231345 is 5431321511.

It is not a de Polignac number, because 1151231345 - 2⁸ = 1151231089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98471 + ... + 109539.

It is an arithmetic number, because the mean of its divisors is an integer number (49416480).

Almost surely, 2^1151231345 is an apocalyptic number.

It is an amenable number.

1151231345 is a deficient number, since it is larger than the sum of its proper divisors (430096015).

1151231345 is a wasteful number, since it uses less digits than its factorization.

1151231345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11177.

The product of its digits is 1800, while the sum is 26.

The square root of 1151231345 is about 33929.8002499278. The cubic root of 1151231345 is about 1048.0633523388.

Adding to 1151231345 its reverse (5431321511), we get a palindrome (6582552856).

The spelling of 1151231345 in words is "one billion, one hundred fifty-one million, two hundred thirty-one thousand, three hundred forty-five".