103643531 has 8 divisors (see below), whose sum is σ = 106880928. Its totient is φ = 100440000.

The previous prime is 103643521. The next prime is 103643539. The reversal of 103643531 is 135346301.

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 103643531 - 2¹⁸ = 103381387 is a prime.

It is a super-2 number, since 2×103643531² = 21483963036295922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103643531.

It is not an unprimeable number, because it can be changed into a prime (103643539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2180 + ... + 14561.

It is an arithmetic number, because the mean of its divisors is an integer number (13360116).

Almost surely, 2^103643531 is an apocalyptic number.

103643531 is a deficient number, since it is larger than the sum of its proper divisors (3237397).

103643531 is a wasteful number, since it uses less digits than its factorization.

103643531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16933.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 103643531 is about 10180.5466945543. The cubic root of 103643531 is about 469.7290289576.

Adding to 103643531 its reverse (135346301), we get a palindrome (238989832).

The spelling of 103643531 in words is "one hundred three million, six hundred forty-three thousand, five hundred thirty-one".