103621289 has 2 divisors, whose sum is σ = 103621290. Its totient is φ = 103621288.

The previous prime is 103621283. The next prime is 103621319. The reversal of 103621289 is 982126301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61889689 + 41731600 = 7867^2 + 6460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103621289 is a prime.

It is a super-3 number, since 3×103621289³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103621283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51810644 + 51810645.

It is an arithmetic number, because the mean of its divisors is an integer number (51810645).

Almost surely, 2^103621289 is an apocalyptic number.

It is an amenable number.

103621289 is a deficient number, since it is larger than the sum of its proper divisors (1).

103621289 is an equidigital number, since it uses as much as digits as its factorization.

103621289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 103621289 is about 10179.4542584561. The cubic root of 103621289 is about 469.6954251221.

It can be divided in two parts, 1036212 and 89, that added together give a palindrome (1036301).

The spelling of 103621289 in words is "one hundred three million, six hundred twenty-one thousand, two hundred eighty-nine".