1131250 has 24 divisors (see below), whose sum is σ = 2132676. Its totient is φ = 450000.

The previous prime is 1131239. The next prime is 1131253. The reversal of 1131250 is 521311.

It can be written as a sum of positive squares in 6 ways, for example, as 463761 + 667489 = 681^2 + 817^2 .

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1131250.

It is not an unprimeable number, because it can be changed into a prime (1131253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6160 + ... + 6340.

2^1131250 is an apocalyptic number.

1131250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131250 is a deficient number, since it is larger than the sum of its proper divisors (1001426).

1131250 is an frugal number, since it uses more digits than its factorization.

1131250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1131250 is about 1063.6023693091. The cubic root of 1131250 is about 104.1964359360.

Adding to 1131250 its reverse (521311), we get a palindrome (1652561).

The spelling of 1131250 in words is "one million, one hundred thirty-one thousand, two hundred fifty".