213707503 has 2 divisors, whose sum is σ = 213707504. Its totient is φ = 213707502.

The previous prime is 213707479. The next prime is 213707509. The reversal of 213707503 is 305707312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213707503 - 2¹⁷ = 213576431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213707509) 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, 106853751 + 106853752.

It is an arithmetic number, because the mean of its divisors is an integer number (106853752).

Almost surely, 2^213707503 is an apocalyptic number.

213707503 is a deficient number, since it is larger than the sum of its proper divisors (1).

213707503 is an equidigital number, since it uses as much as digits as its factorization.

213707503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 213707503 is about 14618.7380782337. The cubic root of 213707503 is about 597.8697633631.

The spelling of 213707503 in words is "two hundred thirteen million, seven hundred seven thousand, five hundred three".