1331125 has 16 divisors (see below), whose sum is σ = 1737216. Its totient is φ = 1016400.

The previous prime is 1331123. The next prime is 1331153. The reversal of 1331125 is 5211331.

It is not a de Polignac number, because 1331125 - 2¹ = 1331123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331099 and 1331108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2644 + ... + 3106.

It is an arithmetic number, because the mean of its divisors is an integer number (108576).

2^1331125 is an apocalyptic number.

It is an amenable number.

1331125 is a deficient number, since it is larger than the sum of its proper divisors (406091).

1331125 is an equidigital number, since it uses as much as digits as its factorization.

1331125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 491 counting only the distinct ones).

The product of its digits is 90, while the sum is 16.

The square root of 1331125 is about 1153.7439057260. The cubic root of 1331125 is about 110.0034434184.

Adding to 1331125 its reverse (5211331), we get a palindrome (6542456).

It can be divided in two parts, 1331 and 125, that multiplied together give a cube (166375 = 55³).

The spelling of 1331125 in words is "one million, three hundred thirty-one thousand, one hundred twenty-five".