381330973 has 4 divisors (see below), whose sum is σ = 383614560. Its totient is φ = 379047388.

The previous prime is 381330899. The next prime is 381330977. The reversal of 381330973 is 379033183.

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 381330973 - 2⁹ = 381330461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381330977) 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, 1141543 + ... + 1141876.

It is an arithmetic number, because the mean of its divisors is an integer number (95903640).

Almost surely, 2^381330973 is an apocalyptic number.

It is an amenable number.

381330973 is a deficient number, since it is larger than the sum of its proper divisors (2283587).

381330973 is a wasteful number, since it uses less digits than its factorization.

381330973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283586.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 381330973 is about 19527.6975857370. The cubic root of 381330973 is about 725.1603120720.

The spelling of 381330973 in words is "three hundred eighty-one million, three hundred thirty thousand, nine hundred seventy-three".