20311203230 has 16 divisors (see below), whose sum is σ = 36598546224. Its totient is φ = 8115952320.

The previous prime is 20311203191. The next prime is 20311203247. The reversal of 20311203230 is 3230211302.

It is a junction number, because it is equal to n+sod(n) for n = 20311203199 and 20311203208.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1056116 + ... + 1075175.

It is an arithmetic number, because the mean of its divisors is an integer number (2287409139).

Almost surely, 2^20311203230 is an apocalyptic number.

20311203230 is a deficient number, since it is larger than the sum of its proper divisors (16287342994).

20311203230 is a wasteful number, since it uses less digits than its factorization.

20311203230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132251.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20311203230 its reverse (3230211302), we get a palindrome (23541414532).

The spelling of 20311203230 in words is "twenty billion, three hundred eleven million, two hundred three thousand, two hundred thirty".