1131908 has 6 divisors (see below), whose sum is σ = 1980846. Its totient is φ = 565952.

The previous prime is 1131883. The next prime is 1131913. The reversal of 1131908 is 8091311.

It can be written as a sum of positive squares in only one way, i.e., 1119364 + 12544 = 1058^2 + 112^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141485 + ... + 141492.

It is an arithmetic number, because the mean of its divisors is an integer number (330141).

2^1131908 is an apocalyptic number.

It is an amenable number.

1131908 is a deficient number, since it is larger than the sum of its proper divisors (848938).

1131908 is a wasteful number, since it uses less digits than its factorization.

1131908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282981 (or 282979 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1131908 is about 1063.9116504673. The cubic root of 1131908 is about 104.2166342317.

The spelling of 1131908 in words is "one million, one hundred thirty-one thousand, nine hundred eight".