20011231316 has 24 divisors (see below), whose sum is σ = 35202123264. Its totient is φ = 9953589600.

The previous prime is 20011231277. The next prime is 20011231381. The reversal of 20011231316 is 61313211002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758141 + ... + 784091.

It is an arithmetic number, because the mean of its divisors is an integer number (1466755136).

Almost surely, 2^20011231316 is an apocalyptic number.

It is an amenable number.

20011231316 is a deficient number, since it is larger than the sum of its proper divisors (15190891948).

20011231316 is a wasteful number, since it uses less digits than its factorization.

20011231316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26951 (or 26949 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20011231316 its reverse (61313211002), we get a palindrome (81324442318).

The spelling of 20011231316 in words is "twenty billion, eleven million, two hundred thirty-one thousand, three hundred sixteen".