1153145321 has 8 divisors (see below), whose sum is σ = 1227477600. Its totient is φ = 1080177120.

The previous prime is 1153145317. The next prime is 1153145333. The reversal of 1153145321 is 1235413511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1153145321 - 2² = 1153145317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153145341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339275 + ... + 342656.

It is an arithmetic number, because the mean of its divisors is an integer number (153434700).

Almost surely, 2^1153145321 is an apocalyptic number.

It is an amenable number.

1153145321 is a deficient number, since it is larger than the sum of its proper divisors (74332279).

1153145321 is an equidigital number, since it uses as much as digits as its factorization.

1153145321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682039.

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

The square root of 1153145321 is about 33957.9934772360. The cubic root of 1153145321 is about 1048.6438488843.

Adding to 1153145321 its reverse (1235413511), we get a palindrome (2388558832).

The spelling of 1153145321 in words is "one billion, one hundred fifty-three million, one hundred forty-five thousand, three hundred twenty-one".