1123811 has 8 divisors (see below), whose sum is σ = 1221024. Its totient is φ = 1028160.

The previous prime is 1123807. The next prime is 1123841. The reversal of 1123811 is 1183211.

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 1123811 - 2² = 1123807 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 1123811.

It is not an unprimeable number, because it can be changed into a prime (1123841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466 + ... + 2096.

It is an arithmetic number, because the mean of its divisors is an integer number (152628).

2^1123811 is an apocalyptic number.

1123811 is a deficient number, since it is larger than the sum of its proper divisors (97213).

1123811 is a wasteful number, since it uses less digits than its factorization.

1123811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781.

The product of its digits is 48, while the sum is 17.

The square root of 1123811 is about 1060.0995236297. The cubic root of 1123811 is about 103.9675379454.

The spelling of 1123811 in words is "one million, one hundred twenty-three thousand, eight hundred eleven".