1126631 has 6 divisors (see below), whose sum is σ = 1238496. Its totient is φ = 1024100.

The previous prime is 1126627. The next prime is 1126649. The reversal of 1126631 is 1366211.

It is not a de Polignac number, because 1126631 - 2² = 1126627 is a prime.

It is a super-4 number, since 4×1126631⁴ (a number of 25 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4535 + ... + 4776.

It is an arithmetic number, because the mean of its divisors is an integer number (206416).

2^1126631 is an apocalyptic number.

1126631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1126631 is a deficient number, since it is larger than the sum of its proper divisors (111865).

1126631 is an equidigital number, since it uses as much as digits as its factorization.

1126631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9333 (or 9322 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 1126631 is about 1061.4287540857. The cubic root of 1126631 is about 104.0544278714.

The spelling of 1126631 in words is "one million, one hundred twenty-six thousand, six hundred thirty-one".