1231243 has 8 divisors (see below), whose sum is σ = 1351728. Its totient is φ = 1114464.

The previous prime is 1231231. The next prime is 1231247. The reversal of 1231243 is 3421321.

It is a happy number.

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

It is not a de Polignac number, because 1231243 - 2¹³ = 1223051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231247) 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, 205 + ... + 1582.

It is an arithmetic number, because the mean of its divisors is an integer number (168966).

2^1231243 is an apocalyptic number.

1231243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1231243 is a deficient number, since it is larger than the sum of its proper divisors (120485).

1231243 is a wasteful number, since it uses less digits than its factorization.

1231243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853.

The product of its digits is 144, while the sum is 16.

The square root of 1231243 is about 1109.6138968128. The cubic root of 1231243 is about 107.1802069995.

Adding to 1231243 its reverse (3421321), we get a palindrome (4652564).

The spelling of 1231243 in words is "one million, two hundred thirty-one thousand, two hundred forty-three".