861330023 has 2 divisors, whose sum is σ = 861330024. Its totient is φ = 861330022.

The previous prime is 861330017. The next prime is 861330031. The reversal of 861330023 is 320033168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 861330023 - 2¹⁰ = 861328999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 861329974 and 861330001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861330053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430665011 + 430665012.

It is an arithmetic number, because the mean of its divisors is an integer number (430665012).

Almost surely, 2^861330023 is an apocalyptic number.

861330023 is a deficient number, since it is larger than the sum of its proper divisors (1).

861330023 is an equidigital number, since it uses as much as digits as its factorization.

861330023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 861330023 is about 29348.4245403395. The cubic root of 861330023 is about 951.4585252462.

The spelling of 861330023 in words is "eight hundred sixty-one million, three hundred thirty thousand, twenty-three".