12311020102 has 4 divisors (see below), whose sum is σ = 18466530156. Its totient is φ = 6155510050.

The previous prime is 12311020031. The next prime is 12311020109. The reversal of 12311020102 is 20102011321.

12311020102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12311020102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311020109) by changing a digit.

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 as a sum of consecutive naturals, namely, 3077755024 + ... + 3077755027.

It is an arithmetic number, because the mean of its divisors is an integer number (4616632539).

Almost surely, 2^12311020102 is an apocalyptic number.

12311020102 is a deficient number, since it is larger than the sum of its proper divisors (6155510054).

12311020102 is an equidigital number, since it uses as much as digits as its factorization.

12311020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155510053.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12311020102 its reverse (20102011321), we get a palindrome (32413031423).

The spelling of 12311020102 in words is "twelve billion, three hundred eleven million, twenty thousand, one hundred two".