103135661 has 2 divisors, whose sum is σ = 103135662. Its totient is φ = 103135660.

The previous prime is 103135631. The next prime is 103135673. The reversal of 103135661 is 166531301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75151561 + 27984100 = 8669^2 + 5290^2 .

It is an emirp because it is prime and its reverse (166531301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103135661 - 2¹⁰ = 103134637 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103135661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103135601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51567830 + 51567831.

It is an arithmetic number, because the mean of its divisors is an integer number (51567831).

Almost surely, 2^103135661 is an apocalyptic number.

It is an amenable number.

103135661 is a deficient number, since it is larger than the sum of its proper divisors (1).

103135661 is an equidigital number, since it uses as much as digits as its factorization.

103135661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 103135661 is about 10155.5729035835. The cubic root of 103135661 is about 468.9605230129.

Adding to 103135661 its reverse (166531301), we get a palindrome (269666962).

The spelling of 103135661 in words is "one hundred three million, one hundred thirty-five thousand, six hundred sixty-one".