102308403 has 4 divisors (see below), whose sum is σ = 136411208. Its totient is φ = 68205600.

The previous prime is 102308399. The next prime is 102308411. The reversal of 102308403 is 304803201.

It is a happy number.

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

It is not a de Polignac number, because 102308403 - 2² = 102308399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102308403.

It is not an unprimeable number, because it can be changed into a prime (102348403) 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, 17051398 + ... + 17051403.

It is an arithmetic number, because the mean of its divisors is an integer number (34102802).

Almost surely, 2^102308403 is an apocalyptic number.

102308403 is a deficient number, since it is larger than the sum of its proper divisors (34102805).

102308403 is an equidigital number, since it uses as much as digits as its factorization.

102308403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34102804.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 102308403 is about 10114.7616383185. The cubic root of 102308403 is about 467.7033010562.

It can be divided in two parts, 102 and 308403, that added together give a triangular number (308505 = T₇₈₅).

The spelling of 102308403 in words is "one hundred two million, three hundred eight thousand, four hundred three".