380385631 has 4 divisors (see below), whose sum is σ = 380566264. Its totient is φ = 380205000.

The previous prime is 380385623. The next prime is 380385647. The reversal of 380385631 is 136583083.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 380385631 - 2³ = 380385623 is a prime.

It is a super-2 number, since 2×380385631² = 289386456542536322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380385601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87120 + ... + 91381.

It is an arithmetic number, because the mean of its divisors is an integer number (95141566).

Almost surely, 2^380385631 is an apocalyptic number.

380385631 is a deficient number, since it is larger than the sum of its proper divisors (180633).

380385631 is a wasteful number, since it uses less digits than its factorization.

380385631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180632.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 380385631 is about 19503.4774078881. The cubic root of 380385631 is about 724.5605777947.

The spelling of 380385631 in words is "three hundred eighty million, three hundred eighty-five thousand, six hundred thirty-one".