1231075 has 12 divisors (see below), whose sum is σ = 1593648. Its totient is φ = 941600.

The previous prime is 1231073. The next prime is 1231091. The reversal of 1231075 is 5701321.

It is not a de Polignac number, because 1231075 - 2¹ = 1231073 is a prime.

It is a Duffinian number.

1231075 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1231073) 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, 496 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (132804).

2^1231075 is an apocalyptic number.

1231075 is a deficient number, since it is larger than the sum of its proper divisors (362573).

1231075 is a wasteful number, since it uses less digits than its factorization.

1231075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174 (or 2169 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 1231075 is about 1109.5381922223. The cubic root of 1231075 is about 107.1753319549.

Adding to 1231075 its reverse (5701321), we get a palindrome (6932396).

The spelling of 1231075 in words is "one million, two hundred thirty-one thousand, seventy-five".