1153312043 has 4 divisors (see below), whose sum is σ = 1242028368. Its totient is φ = 1064595720.

The previous prime is 1153312037. The next prime is 1153312057. The reversal of 1153312043 is 3402133511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3402133511 = 7 ⋅486019073.

It is a cyclic number.

It is not a de Polignac number, because 1153312043 - 2¹⁸ = 1153049899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153312033) 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, 44358143 + ... + 44358168.

It is an arithmetic number, because the mean of its divisors is an integer number (310507092).

Almost surely, 2^1153312043 is an apocalyptic number.

1153312043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1153312043 is a deficient number, since it is larger than the sum of its proper divisors (88716325).

1153312043 is an equidigital number, since it uses as much as digits as its factorization.

1153312043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88716324.

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

The square root of 1153312043 is about 33960.4482155345. The cubic root of 1153312043 is about 1048.6943841671.

Adding to 1153312043 its reverse (3402133511), we get a palindrome (4555445554).

The spelling of 1153312043 in words is "one billion, one hundred fifty-three million, three hundred twelve thousand, forty-three".