211003913513 has 2 divisors, whose sum is σ = 211003913514. Its totient is φ = 211003913512.

The previous prime is 211003913509. The next prime is 211003913539. The reversal of 211003913513 is 315319300112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197662046464 + 13341867049 = 444592^2 + 115507^2 .

It is a cyclic number.

It is not a de Polignac number, because 211003913513 - 2² = 211003913509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211003813513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105501956756 + 105501956757.

It is an arithmetic number, because the mean of its divisors is an integer number (105501956757).

Almost surely, 2^211003913513 is an apocalyptic number.

It is an amenable number.

211003913513 is a deficient number, since it is larger than the sum of its proper divisors (1).

211003913513 is an equidigital number, since it uses as much as digits as its factorization.

211003913513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 29.

The spelling of 211003913513 in words is "two hundred eleven billion, three million, nine hundred thirteen thousand, five hundred thirteen".