87212323 has 6 divisors (see below), whose sum is σ = 95861612. Its totient is φ = 79283820.

The previous prime is 87212311. The next prime is 87212339. The reversal of 87212323 is 32321278.

It is not a de Polignac number, because 87212323 - 2⁵ = 87212291 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 87212291 and 87212300.

It is not an unprimeable number, because it can be changed into a prime (87212303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360261 + ... + 360502.

Almost surely, 2^87212323 is an apocalyptic number.

87212323 is a deficient number, since it is larger than the sum of its proper divisors (8649289).

87212323 is a wasteful number, since it uses less digits than its factorization.

87212323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720785 (or 720774 counting only the distinct ones).

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

The square root of 87212323 is about 9338.7538247884. The cubic root of 87212323 is about 443.4649342040.

The spelling of 87212323 in words is "eighty-seven million, two hundred twelve thousand, three hundred twenty-three".