87031423 has 2 divisors, whose sum is σ = 87031424. Its totient is φ = 87031422.

The previous prime is 87031369. The next prime is 87031429. The reversal of 87031423 is 32413078.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87031423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87031391 and 87031400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87031429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43515711 + 43515712.

It is an arithmetic number, because the mean of its divisors is an integer number (43515712).

Almost surely, 2^87031423 is an apocalyptic number.

87031423 is a deficient number, since it is larger than the sum of its proper divisors (1).

87031423 is an equidigital number, since it uses as much as digits as its factorization.

87031423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 87031423 is about 9329.0633506264. The cubic root of 87031423 is about 443.1581031845.

The spelling of 87031423 in words is "eighty-seven million, thirty-one thousand, four hundred twenty-three".