1131238 has 8 divisors (see below), whose sum is σ = 1742832. Its totient is φ = 550296.

The previous prime is 1131223. The next prime is 1131239. The reversal of 1131238 is 8321311.

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

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131239) 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, 7570 + ... + 7717.

It is an arithmetic number, because the mean of its divisors is an integer number (217854).

2^1131238 is an apocalyptic number.

1131238 is a deficient number, since it is larger than the sum of its proper divisors (611594).

1131238 is a wasteful number, since it uses less digits than its factorization.

1131238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15326.

The product of its digits is 144, while the sum is 19.

The square root of 1131238 is about 1063.5967280882. The cubic root of 1131238 is about 104.1960675053.

Adding to 1131238 its reverse (8321311), we get a palindrome (9452549).

It can be divided in two parts, 1131 and 238, that added together give a square (1369 = 37²).

The spelling of 1131238 in words is "one million, one hundred thirty-one thousand, two hundred thirty-eight".