87210023 has 2 divisors, whose sum is σ = 87210024. Its totient is φ = 87210022.

The previous prime is 87210007. The next prime is 87210031. The reversal of 87210023 is 32001278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87210023 - 2⁴ = 87210007 is a prime.

It is a super-2 number, since 2×87210023² = 15211176223321058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87210523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43605011 + 43605012.

It is an arithmetic number, because the mean of its divisors is an integer number (43605012).

Almost surely, 2^87210023 is an apocalyptic number.

87210023 is a deficient number, since it is larger than the sum of its proper divisors (1).

87210023 is an equidigital number, since it uses as much as digits as its factorization.

87210023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 87210023 is about 9338.6306812080. The cubic root of 87210023 is about 443.4610357552.

The spelling of 87210023 in words is "eighty-seven million, two hundred ten thousand, twenty-three".