20311331102 has 16 divisors (see below), whose sum is σ = 30787353072. Its totient is φ = 10048922880.

The previous prime is 20311331093. The next prime is 20311331123. The reversal of 20311331102 is 20113311302.

It is a super-3 number, since 3×20311331102³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1485248 + ... + 1498860.

It is an arithmetic number, because the mean of its divisors is an integer number (1924209567).

Almost surely, 2^20311331102 is an apocalyptic number.

20311331102 is a deficient number, since it is larger than the sum of its proper divisors (10476021970).

20311331102 is a wasteful number, since it uses less digits than its factorization.

20311331102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21403.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20311331102 its reverse (20113311302), we get a palindrome (40424642404).

The spelling of 20311331102 in words is "twenty billion, three hundred eleven million, three hundred thirty-one thousand, one hundred two".