381923113 has 8 divisors (see below), whose sum is σ = 448693056. Its totient is φ = 320494800.

The previous prime is 381923099. The next prime is 381923137. The reversal of 381923113 is 311329183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381923113 - 2⁹ = 381922601 is a prime.

It is a super-2 number, since 2×381923113² = 291730528487221538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381923153) 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, 1335253 + ... + 1335538.

It is an arithmetic number, because the mean of its divisors is an integer number (56086632).

Almost surely, 2^381923113 is an apocalyptic number.

It is an amenable number.

381923113 is a deficient number, since it is larger than the sum of its proper divisors (66769943).

381923113 is a wasteful number, since it uses less digits than its factorization.

381923113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670815.

The product of its digits is 3888, while the sum is 31.

The square root of 381923113 is about 19542.8532461358. The cubic root of 381923113 is about 725.5354668063.

The spelling of 381923113 in words is "three hundred eighty-one million, nine hundred twenty-three thousand, one hundred thirteen".