1131603406 has 8 divisors (see below), whose sum is σ = 1786742280. Its totient is φ = 536022648.

The previous prime is 1131603397. The next prime is 1131603413. The reversal of 1131603406 is 6043061311.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 14889481 + ... + 14889556.

It is an arithmetic number, because the mean of its divisors is an integer number (223342785).

Almost surely, 2^1131603406 is an apocalyptic number.

1131603406 is a deficient number, since it is larger than the sum of its proper divisors (655138874).

1131603406 is a wasteful number, since it uses less digits than its factorization.

1131603406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29779058.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1131603406 is about 33639.3133996519. The cubic root of 1131603406 is about 1042.0728523597.

Adding to 1131603406 its reverse (6043061311), we get a palindrome (7174664717).

The spelling of 1131603406 in words is "one billion, one hundred thirty-one million, six hundred three thousand, four hundred six".