381431030 has 16 divisors (see below), whose sum is σ = 689833584. Its totient is φ = 151848480.

The previous prime is 381431021. The next prime is 381431033. The reversal of 381431030 is 30134183.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 381430987 and 381431005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381431033) 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 7 ways as a sum of consecutive naturals, for example, 88277 + ... + 92496.

It is an arithmetic number, because the mean of its divisors is an integer number (43114599).

Almost surely, 2^381431030 is an apocalyptic number.

381431030 is a deficient number, since it is larger than the sum of its proper divisors (308402554).

381431030 is a wasteful number, since it uses less digits than its factorization.

381431030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180991.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 381431030 is about 19530.2593428761. The cubic root of 381431030 is about 725.2237311884.

The spelling of 381431030 in words is "three hundred eighty-one million, four hundred thirty-one thousand, thirty".