102731132 has 12 divisors (see below), whose sum is σ = 205462320. Its totient is φ = 44027616.

The previous prime is 102731113. The next prime is 102731149. The reversal of 102731132 is 231137201.

102731132 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1834457 + ... + 1834512.

It is an arithmetic number, because the mean of its divisors is an integer number (17121860).

Almost surely, 2^102731132 is an apocalyptic number.

It is an amenable number.

102731132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102731132 is a wasteful number, since it uses less digits than its factorization.

102731132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668980 (or 3668978 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 102731132 is about 10135.6367338219. The cubic root of 102731132 is about 468.3465850139.

Adding to 102731132 its reverse (231137201), we get a palindrome (333868333).

The spelling of 102731132 in words is "one hundred two million, seven hundred thirty-one thousand, one hundred thirty-two".