102102731582 has 64 divisors (see below), whose sum is σ = 168585753600. Its totient is φ = 46206236160.

The previous prime is 102102731543. The next prime is 102102731587. The reversal of 102102731582 is 285137201201.

102102731582 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102731587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26252294 + ... + 26256182.

It is an arithmetic number, because the mean of its divisors is an integer number (2634152400).

Almost surely, 2^102102731582 is an apocalyptic number.

102102731582 is a deficient number, since it is larger than the sum of its proper divisors (66483022018).

102102731582 is a wasteful number, since it uses less digits than its factorization.

102102731582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281.

The product of its (nonzero) digits is 6720, while the sum is 32.

Adding to 102102731582 its reverse (285137201201), we get a palindrome (387239932783).

The spelling of 102102731582 in words is "one hundred two billion, one hundred two million, seven hundred thirty-one thousand, five hundred eighty-two".