103212989 has 8 divisors (see below), whose sum is σ = 112881600. Its totient is φ = 93592000.

The previous prime is 103212979. The next prime is 103213009. The reversal of 103212989 is 989212301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103212989 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103212979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7289 + ... + 16110.

It is an arithmetic number, because the mean of its divisors is an integer number (14110200).

Almost surely, 2^103212989 is an apocalyptic number.

It is an amenable number.

103212989 is a deficient number, since it is larger than the sum of its proper divisors (9668611).

103212989 is a wasteful number, since it uses less digits than its factorization.

103212989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23811.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 103212989 is about 10159.3793609649. The cubic root of 103212989 is about 469.0776978730.

The spelling of 103212989 in words is "one hundred three million, two hundred twelve thousand, nine hundred eighty-nine".