1131897 has 8 divisors (see below), whose sum is σ = 1625344. Its totient is φ = 696528.

The previous prime is 1131883. The next prime is 1131913. The reversal of 1131897 is 7981311.

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

It is not a de Polignac number, because 1131897 - 2⁴ = 1131881 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1131827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14473 + ... + 14550.

It is an arithmetic number, because the mean of its divisors is an integer number (203168).

2^1131897 is an apocalyptic number.

It is an amenable number.

1131897 is a deficient number, since it is larger than the sum of its proper divisors (493447).

1131897 is a wasteful number, since it uses less digits than its factorization.

1131897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29039.

The product of its digits is 1512, while the sum is 30.

The square root of 1131897 is about 1063.9064808525. The cubic root of 1131897 is about 104.2162966346.

The spelling of 1131897 in words is "one million, one hundred thirty-one thousand, eight hundred ninety-seven".