101231312 has 80 divisors (see below), whose sum is σ = 243234432. Its totient is φ = 39744000.

The previous prime is 101231293. The next prime is 101231321. The reversal of 101231312 is 213132101.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365318 + ... + 365594.

Almost surely, 2^101231312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101231312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121617216).

101231312 is an abundant number, since it is smaller than the sum of its proper divisors (142003120).

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

101231312 is a wasteful number, since it uses less digits than its factorization.

101231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 101231312 is about 10061.3772417100. The cubic root of 101231312 is about 466.0561985923.

Adding to 101231312 its reverse (213132101), we get a palindrome (314363413).

The spelling of 101231312 in words is "one hundred one million, two hundred thirty-one thousand, three hundred twelve".