20000203311 has 32 divisors (see below), whose sum is σ = 30669101568. Its totient is φ = 11474749440.

The previous prime is 20000203291. The next prime is 20000203337. The reversal of 20000203311 is 11330200002.

It is a happy number.

It is not a de Polignac number, because 20000203311 - 2⁶ = 20000203247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000203351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62206 + ... + 209451.

It is an arithmetic number, because the mean of its divisors is an integer number (958409424).

Almost surely, 2^20000203311 is an apocalyptic number.

20000203311 is a deficient number, since it is larger than the sum of its proper divisors (10668898257).

20000203311 is a wasteful number, since it uses less digits than its factorization.

20000203311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271791.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20000203311 its reverse (11330200002), we get a palindrome (31330403313).

The spelling of 20000203311 in words is "twenty billion, two hundred three thousand, three hundred eleven".