103181389 has 8 divisors (see below), whose sum is σ = 104991552. Its totient is φ = 101381280.

The previous prime is 103181369. The next prime is 103181399. The reversal of 103181389 is 983181301.

103181389 = 411² + 412² + ... + 723².

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103181389 - 2⁵ = 103181357 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 (103181359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19902 + ... + 24544.

It is an arithmetic number, because the mean of its divisors is an integer number (13123944).

Almost surely, 2^103181389 is an apocalyptic number.

It is an amenable number.

103181389 is a deficient number, since it is larger than the sum of its proper divisors (1810163).

103181389 is an equidigital number, since it uses as much as digits as its factorization.

103181389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 103181389 is about 10157.8240287967. The cubic root of 103181389 is about 469.0298215724.

The spelling of 103181389 in words is "one hundred three million, one hundred eighty-one thousand, three hundred eighty-nine".