1131863 has 2 divisors, whose sum is σ = 1131864. Its totient is φ = 1131862.

The previous prime is 1131857. The next prime is 1131869. The reversal of 1131863 is 3681311.

It is a balanced prime because it is at equal distance from previous prime (1131857) and next prime (1131869).

It is a cyclic number.

It is not a de Polignac number, because 1131863 - 2⁶ = 1131799 is a prime.

It is a super-2 number, since 2×1131863² = 2562227701538, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565931 + 565932.

It is an arithmetic number, because the mean of its divisors is an integer number (565932).

2^1131863 is an apocalyptic number.

1131863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131863 is an equidigital number, since it uses as much as digits as its factorization.

1131863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 1131863 is about 1063.8905018845. The cubic root of 1131863 is about 104.2152531387.

The spelling of 1131863 in words is "one million, one hundred thirty-one thousand, eight hundred sixty-three".