1153322321 has 4 divisors (see below), whose sum is σ = 1153498944. Its totient is φ = 1153145700.

The previous prime is 1153322263. The next prime is 1153322329. The reversal of 1153322321 is 1232233511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1153322321 - 2²² = 1149128017 is a prime.

It is a super-2 number, since 2×1153322321² = 2660304752233654082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153322329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78125 + ... + 91706.

It is an arithmetic number, because the mean of its divisors is an integer number (288374736).

Almost surely, 2^1153322321 is an apocalyptic number.

It is an amenable number.

1153322321 is a deficient number, since it is larger than the sum of its proper divisors (176623).

1153322321 is an equidigital number, since it uses as much as digits as its factorization.

1153322321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176622.

The product of its digits is 1080, while the sum is 23.

The square root of 1153322321 is about 33960.5995382885. The cubic root of 1153322321 is about 1048.6974993832.

Adding to 1153322321 its reverse (1232233511), we get a palindrome (2385555832).

The spelling of 1153322321 in words is "one billion, one hundred fifty-three million, three hundred twenty-two thousand, three hundred twenty-one".