102718623 has 16 divisors (see below), whose sum is σ = 160755200. Its totient is φ = 57109536.

The previous prime is 102718513. The next prime is 102718631. The reversal of 102718623 is 326817201.

It is a de Polignac number, because none of the positive numbers 2^k-102718623 is a prime.

It is a super-2 number, since 2×102718623² = 21102231022032258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102718633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65323 + ... + 66876.

It is an arithmetic number, because the mean of its divisors is an integer number (10047200).

Almost surely, 2^102718623 is an apocalyptic number.

102718623 is a deficient number, since it is larger than the sum of its proper divisors (58036577).

102718623 is a wasteful number, since it uses less digits than its factorization.

102718623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132246.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 102718623 is about 10135.0196349094. The cubic root of 102718623 is about 468.3275749205.

The spelling of 102718623 in words is "one hundred two million, seven hundred eighteen thousand, six hundred twenty-three".