381312552 has 16 divisors (see below), whose sum is σ = 953281440. Its totient is φ = 127104176.

The previous prime is 381312523. The next prime is 381312553. The reversal of 381312552 is 255213183.

It is not an unprimeable number, because it can be changed into a prime (381312553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7943988 + ... + 7944035.

It is an arithmetic number, because the mean of its divisors is an integer number (59580090).

Almost surely, 2^381312552 is an apocalyptic number.

It is an amenable number.

381312552 is an abundant number, since it is smaller than the sum of its proper divisors (571968888).

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

381312552 is a wasteful number, since it uses less digits than its factorization.

381312552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15888032 (or 15888028 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 381312552 is about 19527.2259166529. The cubic root of 381312552 is about 725.1486350825.

The spelling of 381312552 in words is "three hundred eighty-one million, three hundred twelve thousand, five hundred fifty-two".