381340252 has 12 divisors (see below), whose sum is σ = 669238416. Its totient is φ = 190129280.

The previous prime is 381340249. The next prime is 381340259. The reversal of 381340252 is 252043183.

381340252 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

381340252 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 381340252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381340259) 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, 133624 + ... + 136447.

It is an arithmetic number, because the mean of its divisors is an integer number (55769868).

Almost surely, 2^381340252 is an apocalyptic number.

It is an amenable number.

381340252 is a deficient number, since it is larger than the sum of its proper divisors (287898164).

381340252 is a wasteful number, since it uses less digits than its factorization.

381340252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270428 (or 270426 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 381340252 is about 19527.9351699047. The cubic root of 381340252 is about 725.1661938461.

The spelling of 381340252 in words is "three hundred eighty-one million, three hundred forty thousand, two hundred fifty-two".