102120731306 has 24 divisors (see below), whose sum is σ = 169946229600. Its totient is φ = 45984684680.

The previous prime is 102120731269. The next prime is 102120731311. The reversal of 102120731306 is 603137021201.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1946006 + ... + 1997793.

It is an arithmetic number, because the mean of its divisors is an integer number (7081092900).

Almost surely, 2^102120731306 is an apocalyptic number.

102120731306 is a deficient number, since it is larger than the sum of its proper divisors (67825498294).

102120731306 is a wasteful number, since it uses less digits than its factorization.

102120731306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943930 (or 3943919 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 102120731306 its reverse (603137021201), we get a palindrome (705257752507).

The spelling of 102120731306 in words is "one hundred two billion, one hundred twenty million, seven hundred thirty-one thousand, three hundred six".