103788031 has 4 divisors (see below), whose sum is σ = 107136064. Its totient is φ = 100440000.

The previous prime is 103787993. The next prime is 103788037. The reversal of 103788031 is 130887301.

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

It is a de Polignac number, because none of the positive numbers 2^k-103788031 is a prime.

It is a super-2 number, since 2×103788031² = 21543910757713922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 3348001 = 103788031 / (1 + 0 + 3 + 7 + 8 + 8 + 0 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103787984 and 103788002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103788037) 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, 1673970 + ... + 1674031.

It is an arithmetic number, because the mean of its divisors is an integer number (26784016).

Almost surely, 2^103788031 is an apocalyptic number.

103788031 is a deficient number, since it is larger than the sum of its proper divisors (3348033).

103788031 is an equidigital number, since it uses as much as digits as its factorization.

103788031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348032.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 103788031 is about 10187.6410910475. The cubic root of 103788031 is about 469.9472266082.

The spelling of 103788031 in words is "one hundred three million, seven hundred eighty-eight thousand, thirty-one".