103623021 has 12 divisors (see below), whose sum is σ = 150545148. Its totient is φ = 68681664.

The previous prime is 103623019. The next prime is 103623029. The reversal of 103623021 is 120326301.

103623021 is a `hidden beast` number, since 1 + 0 + 362 + 302 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54552996 + 49070025 = 7386^2 + 7005^2 .

It is not a de Polignac number, because 103623021 - 2¹ = 103623019 is a prime.

It is a super-3 number, since 3×103623021³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103622985 and 103623003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103623029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31720 + ... + 34833.

It is an arithmetic number, because the mean of its divisors is an integer number (12545429).

Almost surely, 2^103623021 is an apocalyptic number.

It is an amenable number.

103623021 is a deficient number, since it is larger than the sum of its proper divisors (46922127).

103623021 is a wasteful number, since it uses less digits than its factorization.

103623021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66732 (or 66729 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 103623021 is about 10179.5393314236. The cubic root of 103623021 is about 469.6980420487.

Adding to 103623021 its reverse (120326301), we get a palindrome (223949322).

The spelling of 103623021 in words is "one hundred three million, six hundred twenty-three thousand, twenty-one".