1131403 has 8 divisors (see below), whose sum is σ = 1392608. Its totient is φ = 895104.

The previous prime is 1131397. The next prime is 1131413. The reversal of 1131403 is 3041311.

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

It is not a de Polignac number, because 1131403 - 2¹³ = 1123211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1131413) 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, 6126 + ... + 6307.

It is an arithmetic number, because the mean of its divisors is an integer number (174076).

2^1131403 is an apocalyptic number.

1131403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1131403 is a deficient number, since it is larger than the sum of its proper divisors (261205).

1131403 is a wasteful number, since it uses less digits than its factorization.

1131403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12453.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1131403 is about 1063.6742922530. The cubic root of 1131403 is about 104.2011331989.

Adding to 1131403 its reverse (3041311), we get a palindrome (4172714).

The spelling of 1131403 in words is "one million, one hundred thirty-one thousand, four hundred three".