1131001303 has 8 divisors (see below), whose sum is σ = 1167896576. Its totient is φ = 1094131800.

The previous prime is 1131001283. The next prime is 1131001309. The reversal of 1131001303 is 3031001311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131001303 - 2⁵ = 1131001271 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 (1131001309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126850 + ... + 135472.

It is an arithmetic number, because the mean of its divisors is an integer number (145987072).

Almost surely, 2^1131001303 is an apocalyptic number.

1131001303 is a deficient number, since it is larger than the sum of its proper divisors (36895273).

1131001303 is an equidigital number, since it uses as much as digits as its factorization.

1131001303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12885.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 1131001303 is about 33630.3628139811. The cubic root of 1131001303 is about 1041.8879976948.

Adding to 1131001303 its reverse (3031001311), we get a palindrome (4162002614).

The spelling of 1131001303 in words is "one billion, one hundred thirty-one million, one thousand, three hundred three".