2103213457 has 2 divisors, whose sum is σ = 2103213458. Its totient is φ = 2103213456.

The previous prime is 2103213407. The next prime is 2103213467. The reversal of 2103213457 is 7543123012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2063975761 + 39237696 = 45431^2 + 6264^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103213457 - 2¹⁵ = 2103180689 is a prime.

It is not a weakly prime, because it can be changed into another prime (2103213407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051606728 + 1051606729.

It is an arithmetic number, because the mean of its divisors is an integer number (1051606729).

Almost surely, 2^2103213457 is an apocalyptic number.

It is an amenable number.

2103213457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103213457 is an equidigital number, since it uses as much as digits as its factorization.

2103213457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 2103213457 is about 45860.8052371521. The cubic root of 2103213457 is about 1281.2320203640.

Adding to 2103213457 its reverse (7543123012), we get a palindrome (9646336469).

The spelling of 2103213457 in words is "two billion, one hundred three million, two hundred thirteen thousand, four hundred fifty-seven".