1131378 has 8 divisors (see below), whose sum is σ = 2262768. Its totient is φ = 377124.

The previous prime is 1131353. The next prime is 1131379. The reversal of 1131378 is 8731311.

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

1131378 is an admirable number.

It is a super-3 number, since 3×1131378³ = 4344546433300266456, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131379) 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, 94276 + ... + 94287.

It is an arithmetic number, because the mean of its divisors is an integer number (282846).

2^1131378 is an apocalyptic number.

1131378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131378 is a wasteful number, since it uses less digits than its factorization.

1131378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188568.

The product of its digits is 504, while the sum is 24.

The square root of 1131378 is about 1063.6625404704. The cubic root of 1131378 is about 104.2003657013.

Adding to 1131378 its reverse (8731311), we get a palindrome (9862689).

The spelling of 1131378 in words is "one million, one hundred thirty-one thousand, three hundred seventy-eight".