1153315231 has 4 divisors (see below), whose sum is σ = 1153521864. Its totient is φ = 1153108600.

The previous prime is 1153315217. The next prime is 1153315253. The reversal of 1153315231 is 1325133511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1153315231 - 2¹³ = 1153307039 is a prime.

It is a super-2 number, since 2×1153315231² = 2660272044113166722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1153315196 and 1153315205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153315211) 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 3 ways as a sum of consecutive naturals, for example, 94705 + ... + 106186.

It is an arithmetic number, because the mean of its divisors is an integer number (288380466).

Almost surely, 2^1153315231 is an apocalyptic number.

1153315231 is a deficient number, since it is larger than the sum of its proper divisors (206633).

1153315231 is an equidigital number, since it uses as much as digits as its factorization.

1153315231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206632.

The product of its digits is 1350, while the sum is 25.

The square root of 1153315231 is about 33960.4951524562. The cubic root of 1153315231 is about 1048.6953504377.

Adding to 1153315231 its reverse (1325133511), we get a palindrome (2478448742).

The spelling of 1153315231 in words is "one billion, one hundred fifty-three million, three hundred fifteen thousand, two hundred thirty-one".