20030711 has 2 divisors, whose sum is σ = 20030712. Its totient is φ = 20030710.

The previous prime is 20030683. The next prime is 20030713. The reversal of 20030711 is 11703002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20030711 is a prime.

Together with 20030713, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20030713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015355 + 10015356.

It is an arithmetic number, because the mean of its divisors is an integer number (10015356).

Almost surely, 2^20030711 is an apocalyptic number.

20030711 is a deficient number, since it is larger than the sum of its proper divisors (1).

20030711 is an equidigital number, since it uses as much as digits as its factorization.

20030711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 20030711 is about 4475.5682320796. The cubic root of 20030711 is about 271.5806280707.

Adding to 20030711 its reverse (11703002), we get a palindrome (31733713).

The spelling of 20030711 in words is "twenty million, thirty thousand, seven hundred eleven".