103212015 has 48 divisors (see below), whose sum is σ = 181694880. Its totient is φ = 49960960.

The previous prime is 103211963. The next prime is 103212019. The reversal of 103212015 is 510212301.

It is a de Polignac number, because none of the positive numbers 2^k-103212015 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 103211985 and 103212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103212019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125305 + ... + 126125.

It is an arithmetic number, because the mean of its divisors is an integer number (3785310).

Almost surely, 2^103212015 is an apocalyptic number.

103212015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

103212015 is a deficient number, since it is larger than the sum of its proper divisors (78482865).

103212015 is a wasteful number, since it uses less digits than its factorization.

103212015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 103212015 is about 10159.3314248527. The cubic root of 103212015 is about 469.0762223381.

Adding to 103212015 its reverse (510212301), we get a palindrome (613424316).

The spelling of 103212015 in words is "one hundred three million, two hundred twelve thousand, fifteen".