20311323006 has 16 divisors (see below), whose sum is σ = 43747465104. Its totient is φ = 6249637824.

The previous prime is 20311323001. The next prime is 20311323031. The reversal of 20311323006 is 60032311302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311323001) 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 in 7 ways as a sum of consecutive naturals, for example, 130200711 + ... + 130200866.

It is an arithmetic number, because the mean of its divisors is an integer number (2734216569).

Almost surely, 2^20311323006 is an apocalyptic number.

20311323006 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20311323006 is an abundant number, since it is smaller than the sum of its proper divisors (23436142098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311323006 is a wasteful number, since it uses less digits than its factorization.

20311323006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260401595.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20311323006 its reverse (60032311302), we get a palindrome (80343634308).

The spelling of 20311323006 in words is "twenty billion, three hundred eleven million, three hundred twenty-three thousand, six".