103213049 has 2 divisors, whose sum is σ = 103213050. Its totient is φ = 103213048.

The previous prime is 103213039. The next prime is 103213051. The reversal of 103213049 is 940312301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103164649 + 48400 = 10157^2 + 220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103213049 is a prime.

Together with 103213051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103213009) 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 as a sum of consecutive naturals, namely, 51606524 + 51606525.

It is an arithmetic number, because the mean of its divisors is an integer number (51606525).

Almost surely, 2^103213049 is an apocalyptic number.

It is an amenable number.

103213049 is a deficient number, since it is larger than the sum of its proper divisors (1).

103213049 is an equidigital number, since it uses as much as digits as its factorization.

103213049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 103213049 is about 10159.3823139008. The cubic root of 103213049 is about 469.0777887681.

The spelling of 103213049 in words is "one hundred three million, two hundred thirteen thousand, forty-nine".