103211513 has 2 divisors, whose sum is σ = 103211514. Its totient is φ = 103211512.

The previous prime is 103211509. The next prime is 103211527. The reversal of 103211513 is 315112301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81234169 + 21977344 = 9013^2 + 4688^2 .

It is a cyclic number.

It is not a de Polignac number, because 103211513 - 2² = 103211509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103211491 and 103211500.

It is not a weakly prime, because it can be changed into another prime (103211593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51605756 + 51605757.

It is an arithmetic number, because the mean of its divisors is an integer number (51605757).

Almost surely, 2^103211513 is an apocalyptic number.

It is an amenable number.

103211513 is a deficient number, since it is larger than the sum of its proper divisors (1).

103211513 is an equidigital number, since it uses as much as digits as its factorization.

103211513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 103211513 is about 10159.3067184725. The cubic root of 103211513 is about 469.0754618431.

Adding to 103211513 its reverse (315112301), we get a palindrome (418323814).

The spelling of 103211513 in words is "one hundred three million, two hundred eleven thousand, five hundred thirteen".