1105631 has 4 divisors (see below), whose sum is σ = 1116072. Its totient is φ = 1095192.

The previous prime is 1105627. The next prime is 1105639. The reversal of 1105631 is 1365011.

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 1105631 - 2² = 1105627 is a prime.

It is a super-2 number, since 2×1105631² = 2444839816322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105639) 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, 5060 + ... + 5273.

It is an arithmetic number, because the mean of its divisors is an integer number (279018).

2^1105631 is an apocalyptic number.

1105631 is a deficient number, since it is larger than the sum of its proper divisors (10441).

1105631 is a wasteful number, since it uses less digits than its factorization.

1105631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10440.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1105631 is about 1051.4898953390. The cubic root of 1105631 is about 103.4038563561.

The spelling of 1105631 in words is "one million, one hundred five thousand, six hundred thirty-one".