381312970 has 8 divisors (see below), whose sum is σ = 686363364. Its totient is φ = 152525184.

The previous prime is 381312959. The next prime is 381312977. The reversal of 381312970 is 79213183.

It can be written as a sum of positive squares in 2 ways, for example, as 378730521 + 2582449 = 19461^2 + 1607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (381312977) 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, 19065639 + ... + 19065658.

Almost surely, 2^381312970 is an apocalyptic number.

381312970 is a deficient number, since it is larger than the sum of its proper divisors (305050394).

381312970 is a wasteful number, since it uses less digits than its factorization.

381312970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38131304.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 381312970 is about 19527.2366196551. The cubic root of 381312970 is about 725.1489000550.

The spelling of 381312970 in words is "three hundred eighty-one million, three hundred twelve thousand, nine hundred seventy".