387890031312 has 240 divisors, whose sum is σ = 1297126710720. Its totient is φ = 110657933568.

The previous prime is 387890031301. The next prime is 387890031317. The reversal of 387890031312 is 213130098783.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387890031317) 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, 14317203 + ... + 14344269.

It is an arithmetic number, because the mean of its divisors is an integer number (5404694628).

Almost surely, 2^387890031312 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 387890031312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648563355360).

387890031312 is an abundant number, since it is smaller than the sum of its proper divisors (909236679408).

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

387890031312 is a wasteful number, since it uses less digits than its factorization.

387890031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27775 (or 27756 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 387890031312 in words is "three hundred eighty-seven billion, eight hundred ninety million, thirty-one thousand, three hundred twelve".