1040631 has 4 divisors (see below), whose sum is σ = 1387512. Its totient is φ = 693752.

The previous prime is 1040629. The next prime is 1040651. The reversal of 1040631 is 1360401.

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 1040631 - 2¹ = 1040629 is a prime.

It is a super-2 number, since 2×1040631² = 2165825756322, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040651) 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, 173436 + ... + 173441.

It is an arithmetic number, because the mean of its divisors is an integer number (346878).

2^1040631 is an apocalyptic number.

1040631 is a deficient number, since it is larger than the sum of its proper divisors (346881).

1040631 is an equidigital number, since it uses as much as digits as its factorization.

1040631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346880.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1040631 is about 1020.1132290094. The cubic root of 1040631 is about 101.3364267388.

The spelling of 1040631 in words is "one million, forty thousand, six hundred thirty-one".