1231043 has 4 divisors (see below), whose sum is σ = 1342968. Its totient is φ = 1119120.

The previous prime is 1231039. The next prime is 1231049. The reversal of 1231043 is 3401321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1231043 - 2² = 1231039 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 55946 + ... + 55967.

It is an arithmetic number, because the mean of its divisors is an integer number (335742).

2^1231043 is an apocalyptic number.

1231043 is a deficient number, since it is larger than the sum of its proper divisors (111925).

1231043 is a wasteful number, since it uses less digits than its factorization.

1231043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111924.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1231043 is about 1109.5237717147. The cubic root of 1231043 is about 107.1744033247.

Adding to 1231043 its reverse (3401321), we get a palindrome (4632364).

The spelling of 1231043 in words is "one million, two hundred thirty-one thousand, forty-three".