1080631 has 4 divisors (see below), whose sum is σ = 1087672. Its totient is φ = 1073592.

The previous prime is 1080613. The next prime is 1080647. The reversal of 1080631 is 1360801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1360801 = 13 ⋅104677.

It is a cyclic number.

It is not a de Polignac number, because 1080631 - 2⁹ = 1080119 is a prime.

It is a super-2 number, since 2×1080631² = 2335526716322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1080599 and 1080608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080661) 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, 3285 + ... + 3598.

It is an arithmetic number, because the mean of its divisors is an integer number (271918).

2^1080631 is an apocalyptic number.

1080631 is a deficient number, since it is larger than the sum of its proper divisors (7041).

1080631 is an equidigital number, since it uses as much as digits as its factorization.

1080631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1080631 is about 1039.5340302270. The cubic root of 1080631 is about 102.6185342960.

It can be divided in two parts, 1080 and 631, that added together give a triangular number (1711 = T₅₈).

The spelling of 1080631 in words is "one million, eighty thousand, six hundred thirty-one".