87313123 has 2 divisors, whose sum is σ = 87313124. Its totient is φ = 87313122.

The previous prime is 87313117. The next prime is 87313159. The reversal of 87313123 is 32131378.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87313123 - 2⁹ = 87312611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87313091 and 87313100.

It is not a weakly prime, because it can be changed into another prime (87313423) 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, 43656561 + 43656562.

It is an arithmetic number, because the mean of its divisors is an integer number (43656562).

Almost surely, 2^87313123 is an apocalyptic number.

87313123 is a deficient number, since it is larger than the sum of its proper divisors (1).

87313123 is an equidigital number, since it uses as much as digits as its factorization.

87313123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 87313123 is about 9344.1491319435. The cubic root of 87313123 is about 443.6357206746.

The spelling of 87313123 in words is "eighty-seven million, three hundred thirteen thousand, one hundred twenty-three".