381315370 has 16 divisors (see below), whose sum is σ = 722492640. Its totient is φ = 144498384.

The previous prime is 381315359. The next prime is 381315379. The reversal of 381315370 is 73513183.

It is a happy number.

It is a super-2 number, since 2×381315370² = 290802822796473800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381315379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003272 + ... + 1003651.

It is an arithmetic number, because the mean of its divisors is an integer number (45155790).

Almost surely, 2^381315370 is an apocalyptic number.

381315370 is a deficient number, since it is larger than the sum of its proper divisors (341177270).

381315370 is a wasteful number, since it uses less digits than its factorization.

381315370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006949.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 381315370 is about 19527.2980721860. The cubic root of 381315370 is about 725.1504214245.

The spelling of 381315370 in words is "three hundred eighty-one million, three hundred fifteen thousand, three hundred seventy".