103213025 has 6 divisors (see below), whose sum is σ = 127984182. Its totient is φ = 82570400.

The previous prime is 103213009. The next prime is 103213039. The reversal of 103213025 is 520312301.

It can be written as a sum of positive squares in 3 ways, for example, as 7744 + 103205281 = 88^2 + 10159^2 .

It is not a de Polignac number, because 103213025 - 2⁴ = 103213009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103212994 and 103213012.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2064236 + ... + 2064285.

It is an arithmetic number, because the mean of its divisors is an integer number (21330697).

Almost surely, 2^103213025 is an apocalyptic number.

It is an amenable number.

103213025 is a deficient number, since it is larger than the sum of its proper divisors (24771157).

103213025 is an equidigital number, since it uses as much as digits as its factorization.

103213025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4128531 (or 4128526 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 103213025 is about 10159.3811327265. The cubic root of 103213025 is about 469.0777524100.

Adding to 103213025 its reverse (520312301), we get a palindrome (623525326).

The spelling of 103213025 in words is "one hundred three million, two hundred thirteen thousand, twenty-five".