102263813 has 4 divisors (see below), whose sum is σ = 103276428. Its totient is φ = 101251200.

The previous prime is 102263807. The next prime is 102263827. The reversal of 102263813 is 318362201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 318362201 = 101 ⋅3152101.

It can be written as a sum of positive squares in 2 ways, for example, as 51811204 + 50452609 = 7198^2 + 7103^2 .

It is a cyclic number.

It is not a de Polignac number, because 102263813 - 2⁴ = 102263797 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 (102263803) 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, 506156 + ... + 506357.

It is an arithmetic number, because the mean of its divisors is an integer number (25819107).

Almost surely, 2^102263813 is an apocalyptic number.

It is an amenable number.

102263813 is a deficient number, since it is larger than the sum of its proper divisors (1012615).

102263813 is a wasteful number, since it uses less digits than its factorization.

102263813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012614.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 102263813 is about 10112.5571939050. The cubic root of 102263813 is about 467.6353433906.

The spelling of 102263813 in words is "one hundred two million, two hundred sixty-three thousand, eight hundred thirteen".