103212013 has 4 divisors (see below), whose sum is σ = 103256640. Its totient is φ = 103167388.

The previous prime is 103211963. The next prime is 103212019. The reversal of 103212013 is 310212301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310212301 = 7 ⋅44316043.

It is a cyclic number.

It is not a de Polignac number, because 103212013 - 2⁹ = 103211501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103211984 and 103212002.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18643 + ... + 23536.

It is an arithmetic number, because the mean of its divisors is an integer number (25814160).

Almost surely, 2^103212013 is an apocalyptic number.

It is an amenable number.

103212013 is a deficient number, since it is larger than the sum of its proper divisors (44627).

103212013 is an equidigital number, since it uses as much as digits as its factorization.

103212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44626.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 103212013 is about 10159.3313264210. The cubic root of 103212013 is about 469.0762193082.

Adding to 103212013 its reverse (310212301), we get a palindrome (413424314).

The spelling of 103212013 in words is "one hundred three million, two hundred twelve thousand, thirteen".