102131031311 has 16 divisors (see below), whose sum is σ = 104643614880. Its totient is φ = 99645985920.

The previous prime is 102131031293. The next prime is 102131031347. The reversal of 102131031311 is 113130131201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102131031311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102131031311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131031361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8710625 + ... + 8722341.

It is an arithmetic number, because the mean of its divisors is an integer number (6540225930).

Almost surely, 2^102131031311 is an apocalyptic number.

102131031311 is a deficient number, since it is larger than the sum of its proper divisors (2512583569).

102131031311 is a wasteful number, since it uses less digits than its factorization.

102131031311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12874.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 102131031311 its reverse (113130131201), we get a palindrome (215261162512).

The spelling of 102131031311 in words is "one hundred two billion, one hundred thirty-one million, thirty-one thousand, three hundred eleven".