102102103131 has 64 divisors (see below), whose sum is σ = 161539276800. Its totient is φ = 56156841216.

The previous prime is 102102103123. The next prime is 102102103151. The reversal of 102102103131 is 131301201201.

It is a happy number.

It is not a de Polignac number, because 102102103131 - 2³ = 102102103123 is a prime.

It is a super-2 number, since 2×102102103131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102102103131.

It is not an unprimeable number, because it can be changed into a prime (102102103151) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27305460 + ... + 27309198.

It is an arithmetic number, because the mean of its divisors is an integer number (2524051200).

Almost surely, 2^102102103131 is an apocalyptic number.

102102103131 is a deficient number, since it is larger than the sum of its proper divisors (59437173669).

102102103131 is a wasteful number, since it uses less digits than its factorization.

102102103131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4248.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 102102103131 its reverse (131301201201), we get a palindrome (233403304332).

The spelling of 102102103131 in words is "one hundred two billion, one hundred two million, one hundred three thousand, one hundred thirty-one".