101215312 has 20 divisors (see below), whose sum is σ = 213932736. Its totient is φ = 46006880.

The previous prime is 101215291. The next prime is 101215321. The reversal of 101215312 is 213512101.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 287368 + ... + 287719.

Almost surely, 2^101215312 is an apocalyptic number.

It is an amenable number.

101215312 is an abundant number, since it is smaller than the sum of its proper divisors (112717424).

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

101215312 is a wasteful number, since it uses less digits than its factorization.

101215312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575106 (or 575100 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 101215312 is about 10060.5820905154. The cubic root of 101215312 is about 466.0316433043.

Adding to 101215312 its reverse (213512101), we get a palindrome (314727413).

The spelling of 101215312 in words is "one hundred one million, two hundred fifteen thousand, three hundred twelve".