1031945 has 8 divisors (see below), whose sum is σ = 1246536. Its totient is φ = 820096.

The previous prime is 1031923. The next prime is 1031981. The reversal of 1031945 is 5491301.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 299209 + 732736 = 547^2 + 856^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1031945 - 2¹⁴ = 1015561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269 + ... + 1461.

It is an arithmetic number, because the mean of its divisors is an integer number (155817).

2^1031945 is an apocalyptic number.

It is an amenable number.

1031945 is a deficient number, since it is larger than the sum of its proper divisors (214591).

1031945 is a wasteful number, since it uses less digits than its factorization.

1031945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1031945 is about 1015.8469372893. The cubic root of 1031945 is about 101.0536916759.

It can be divided in two parts, 103 and 1945, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1031945 in words is "one million, thirty-one thousand, nine hundred forty-five".