1231047 has 12 divisors (see below), whose sum is σ = 1820104. Its totient is φ = 801360.

The previous prime is 1231039. The next prime is 1231049. The reversal of 1231047 is 7401321.

It is not a de Polignac number, because 1231047 - 2³ = 1231039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231049) 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, 1204 + ... + 1977.

2^1231047 is an apocalyptic number.

1231047 is a deficient number, since it is larger than the sum of its proper divisors (589057).

1231047 is a wasteful number, since it uses less digits than its factorization.

1231047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230 (or 3227 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1231047 is about 1109.5255742884. The cubic root of 1231047 is about 107.1745194043.

Adding to 1231047 its reverse (7401321), we get a palindrome (8632368).

The spelling of 1231047 in words is "one million, two hundred thirty-one thousand, forty-seven".