101440812 has 24 divisors (see below), whose sum is σ = 258213312. Its totient is φ = 30739600.

The previous prime is 101440789. The next prime is 101440813. The reversal of 101440812 is 218044101.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (101440813) 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, 384114 + ... + 384377.

It is an arithmetic number, because the mean of its divisors is an integer number (10758888).

Almost surely, 2^101440812 is an apocalyptic number.

101440812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101440812 is an abundant number, since it is smaller than the sum of its proper divisors (156772500).

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

101440812 is a wasteful number, since it uses less digits than its factorization.

101440812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768509 (or 768507 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 101440812 is about 10071.7829603303. The cubic root of 101440812 is about 466.3774809240.

Adding to 101440812 its reverse (218044101), we get a palindrome (319484913).

The spelling of 101440812 in words is "one hundred one million, four hundred forty thousand, eight hundred twelve".