103902013 has 4 divisors (see below), whose sum is σ = 109370560. Its totient is φ = 98433468.

The previous prime is 103901989. The next prime is 103902037. The reversal of 103902013 is 310209301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310209301 = 16193 ⋅19157.

It is an interprime number because it is at equal distance from previous prime (103901989) and next prime (103902037).

It is a cyclic number.

It is not a de Polignac number, because 103902013 - 2⁵ = 103901981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 5468527 = 103902013 / (1 + 0 + 3 + 9 + 0 + 2 + 0 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103902053) 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, 2734245 + ... + 2734282.

It is an arithmetic number, because the mean of its divisors is an integer number (27342640).

Almost surely, 2^103902013 is an apocalyptic number.

It is an amenable number.

103902013 is a deficient number, since it is larger than the sum of its proper divisors (5468547).

103902013 is an equidigital number, since it uses as much as digits as its factorization.

103902013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5468546.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 103902013 is about 10193.2336871083. The cubic root of 103902013 is about 470.1191986790.

It can be divided in two parts, 10390 and 2013, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 103902013 in words is "one hundred three million, nine hundred two thousand, thirteen".