1131177359 has 4 divisors (see below), whose sum is σ = 1218191016. Its totient is φ = 1044163704.

The previous prime is 1131177343. The next prime is 1131177361. The reversal of 1131177359 is 9537711311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9537711311 = 8069 ⋅1182019.

It is a cyclic number.

It is not a de Polignac number, because 1131177359 - 2⁴ = 1131177343 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 (1131177389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43506809 + ... + 43506834.

It is an arithmetic number, because the mean of its divisors is an integer number (304547754).

Almost surely, 2^1131177359 is an apocalyptic number.

1131177359 is a deficient number, since it is larger than the sum of its proper divisors (87013657).

1131177359 is an equidigital number, since it uses as much as digits as its factorization.

1131177359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87013656.

The product of its digits is 19845, while the sum is 38.

The square root of 1131177359 is about 33632.9802277467. The cubic root of 1131177359 is about 1041.9420563169.

The spelling of 1131177359 in words is "one billion, one hundred thirty-one million, one hundred seventy-seven thousand, three hundred fifty-nine".