1151311303 has 4 divisors (see below), whose sum is σ = 1153934320. Its totient is φ = 1148688288.

The previous prime is 1151311243. The next prime is 1151311307. The reversal of 1151311303 is 3031131511.

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 1151311303 - 2²¹ = 1149214151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151311307) 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, 1310850 + ... + 1311727.

It is an arithmetic number, because the mean of its divisors is an integer number (288483580).

Almost surely, 2^1151311303 is an apocalyptic number.

1151311303 is a deficient number, since it is larger than the sum of its proper divisors (2623017).

1151311303 is an equidigital number, since it uses as much as digits as its factorization.

1151311303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623016.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 1151311303 is about 33930.9785152153. The cubic root of 1151311303 is about 1048.0876159558.

Adding to 1151311303 its reverse (3031131511), we get a palindrome (4182442814).

The spelling of 1151311303 in words is "one billion, one hundred fifty-one million, three hundred eleven thousand, three hundred three".