102311112 has 32 divisors (see below), whose sum is σ = 258864480. Its totient is φ = 33692160.

The previous prime is 102311093. The next prime is 102311119. The reversal of 102311112 is 211113201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (102311119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23689 + ... + 27672.

It is an arithmetic number, because the mean of its divisors is an integer number (8089515).

Almost surely, 2^102311112 is an apocalyptic number.

102311112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102311112 is an abundant number, since it is smaller than the sum of its proper divisors (156553368).

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

102311112 is a wasteful number, since it uses less digits than its factorization.

102311112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51453 (or 51449 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 102311112 is about 10114.8955506224. The cubic root of 102311112 is about 467.7074290882.

Adding to 102311112 its reverse (211113201), we get a palindrome (313424313).

The spelling of 102311112 in words is "one hundred two million, three hundred eleven thousand, one hundred twelve".