381307122 has 96 divisors (see below), whose sum is σ = 1004659200. Its totient is φ = 106850016.

The previous prime is 381307111. The next prime is 381307123. The reversal of 381307122 is 221703183.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (381307123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138879 + ... + 141597.

It is an arithmetic number, because the mean of its divisors is an integer number (10465200).

Almost surely, 2^381307122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381307122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502329600).

381307122 is an abundant number, since it is smaller than the sum of its proper divisors (623352078).

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

381307122 is a wasteful number, since it uses less digits than its factorization.

381307122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797 (or 2784 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 381307122 is about 19527.0868795118. The cubic root of 381307122 is about 725.1451929581.

The spelling of 381307122 in words is "three hundred eighty-one million, three hundred seven thousand, one hundred twenty-two".