381433042321 has 4 divisors (see below), whose sum is σ = 387898009200. Its totient is φ = 374968075444.

The previous prime is 381433042259. The next prime is 381433042357. The reversal of 381433042321 is 123240334183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 381433042321 - 2⁹ = 381433041809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381433042391) 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, 3232483351 + ... + 3232483468.

It is an arithmetic number, because the mean of its divisors is an integer number (96974502300).

Almost surely, 2^381433042321 is an apocalyptic number.

It is an amenable number.

381433042321 is a deficient number, since it is larger than the sum of its proper divisors (6464966879).

381433042321 is an equidigital number, since it uses as much as digits as its factorization.

381433042321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464966878.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 381433042321 in words is "three hundred eighty-one billion, four hundred thirty-three million, forty-two thousand, three hundred twenty-one".