1131604343 has 8 divisors (see below), whose sum is σ = 1137788496. Its totient is φ = 1125432000.

The previous prime is 1131604333. The next prime is 1131604363. The reversal of 1131604343 is 3434061311.

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 1131604343 - 2⁸ = 1131604087 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 (1131604333) 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, 242573 + ... + 247193.

It is an arithmetic number, because the mean of its divisors is an integer number (142223562).

Almost surely, 2^1131604343 is an apocalyptic number.

1131604343 is a deficient number, since it is larger than the sum of its proper divisors (6184153).

1131604343 is a wasteful number, since it uses less digits than its factorization.

1131604343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5905.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1131604343 is about 33639.3273268060. The cubic root of 1131604343 is about 1042.0731399817.

Adding to 1131604343 its reverse (3434061311), we get a palindrome (4565665654).

The spelling of 1131604343 in words is "one billion, one hundred thirty-one million, six hundred four thousand, three hundred forty-three".