1153205315 has 4 divisors (see below), whose sum is σ = 1383846384. Its totient is φ = 922564248.

The previous prime is 1153205297. The next prime is 1153205351. The reversal of 1153205315 is 5135023511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5135023511 = 251 ⋅20458261.

It is a cyclic number.

It is not a de Polignac number, because 1153205315 - 2²⁴ = 1136428099 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115320527 + ... + 115320536.

It is an arithmetic number, because the mean of its divisors is an integer number (345961596).

Almost surely, 2^1153205315 is an apocalyptic number.

1153205315 is a deficient number, since it is larger than the sum of its proper divisors (230641069).

1153205315 is an equidigital number, since it uses as much as digits as its factorization.

1153205315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230641068.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 1153205315 is about 33958.8768218267. The cubic root of 1153205315 is about 1048.6620342904.

Adding to 1153205315 its reverse (5135023511), we get a palindrome (6288228826).

The spelling of 1153205315 in words is "one billion, one hundred fifty-three million, two hundred five thousand, three hundred fifteen".