102131864132 has 6 divisors (see below), whose sum is σ = 178730762238. Its totient is φ = 51065932064.

The previous prime is 102131864101. The next prime is 102131864143. The reversal of 102131864132 is 231468131201.

It can be written as a sum of positive squares in only one way, i.e., 55793274436 + 46338589696 = 236206^2 + 215264^2 .

It is a super-2 number, since 2×102131864132² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12766483013 + ... + 12766483020.

It is an arithmetic number, because the mean of its divisors is an integer number (29788460373).

Almost surely, 2^102131864132 is an apocalyptic number.

It is an amenable number.

102131864132 is a deficient number, since it is larger than the sum of its proper divisors (76598898106).

102131864132 is a wasteful number, since it uses less digits than its factorization.

102131864132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25532966037 (or 25532966035 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

Adding to 102131864132 its reverse (231468131201), we get a palindrome (333599995333).

The spelling of 102131864132 in words is "one hundred two billion, one hundred thirty-one million, eight hundred sixty-four thousand, one hundred thirty-two".