1131313403 has 8 divisors (see below), whose sum is σ = 1276717680. Its totient is φ = 993002080.

The previous prime is 1131313387. The next prime is 1131313429. The reversal of 1131313403 is 3043131311.

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 1131313403 - 2⁴ = 1131313387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131313483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1772900 + ... + 1773537.

It is an arithmetic number, because the mean of its divisors is an integer number (159589710).

Almost surely, 2^1131313403 is an apocalyptic number.

1131313403 is a deficient number, since it is larger than the sum of its proper divisors (145404277).

1131313403 is a wasteful number, since it uses less digits than its factorization.

1131313403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546477.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1131313403 is about 33635.0026460531. The cubic root of 1131313403 is about 1041.9838252702.

Adding to 1131313403 its reverse (3043131311), we get a palindrome (4174444714).

The spelling of 1131313403 in words is "one billion, one hundred thirty-one million, three hundred thirteen thousand, four hundred three".