1231038 has 48 divisors (see below), whose sum is σ = 2948400. Its totient is φ = 383616.

The previous prime is 1231003. The next prime is 1231039. The reversal of 1231038 is 8301321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1231038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8188 + ... + 8336.

It is an arithmetic number, because the mean of its divisors is an integer number (61425).

2^1231038 is an apocalyptic number.

1231038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474200).

1231038 is an abundant number, since it is smaller than the sum of its proper divisors (1717362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231038 is a wasteful number, since it uses less digits than its factorization.

1231038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1231038 is about 1109.5215184934. The cubic root of 1231038 is about 107.1742582247.

Adding to 1231038 its reverse (8301321), we get a palindrome (9532359).

The spelling of 1231038 in words is "one million, two hundred thirty-one thousand, thirty-eight".