87123703 has 4 divisors (see below), whose sum is σ = 87146488. Its totient is φ = 87100920.

The previous prime is 87123697. The next prime is 87123731. The reversal of 87123703 is 30732178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87123703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87103703) 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, 4101 + ... + 13822.

It is an arithmetic number, because the mean of its divisors is an integer number (21786622).

Almost surely, 2^87123703 is an apocalyptic number.

87123703 is a deficient number, since it is larger than the sum of its proper divisors (22785).

87123703 is a wasteful number, since it uses less digits than its factorization.

87123703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22784.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 87123703 is about 9334.0078744342. The cubic root of 87123703 is about 443.3146756930.

The spelling of 87123703 in words is "eighty-seven million, one hundred twenty-three thousand, seven hundred three".