861183023 has 2 divisors, whose sum is σ = 861183024. Its totient is φ = 861183022.

The previous prime is 861183013. The next prime is 861183053. The reversal of 861183023 is 320381168.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 861183023 - 2²⁰ = 860134447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861183013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430591511 + 430591512.

It is an arithmetic number, because the mean of its divisors is an integer number (430591512).

Almost surely, 2^861183023 is an apocalyptic number.

861183023 is a deficient number, since it is larger than the sum of its proper divisors (1).

861183023 is an equidigital number, since it uses as much as digits as its factorization.

861183023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 861183023 is about 29345.9200401010. The cubic root of 861183023 is about 951.4043948676.

The spelling of 861183023 in words is "eight hundred sixty-one million, one hundred eighty-three thousand, twenty-three".