87113219 has 4 divisors (see below), whose sum is σ = 92237544. Its totient is φ = 81988896.

The previous prime is 87113209. The next prime is 87113239. The reversal of 87113219 is 91231178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91231178 = 2 ⋅45615589.

It is a cyclic number.

It is not a de Polignac number, because 87113219 - 2¹² = 87109123 is a prime.

It is a super-2 number, since 2×87113219² = 15177425849083922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87113209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2562137 + ... + 2562170.

It is an arithmetic number, because the mean of its divisors is an integer number (23059386).

Almost surely, 2^87113219 is an apocalyptic number.

87113219 is a deficient number, since it is larger than the sum of its proper divisors (5124325).

87113219 is a wasteful number, since it uses less digits than its factorization.

87113219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5124324.

The product of its digits is 3024, while the sum is 32.

The square root of 87113219 is about 9333.4462552693. The cubic root of 87113219 is about 443.2968929414.

The spelling of 87113219 in words is "eighty-seven million, one hundred thirteen thousand, two hundred nineteen".