381028233 has 4 divisors (see below), whose sum is σ = 508037648. Its totient is φ = 254018820.

The previous prime is 381028229. The next prime is 381028237. The reversal of 381028233 is 332820183.

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 an interprime number because it is at equal distance from previous prime (381028229) and next prime (381028237).

It is not a de Polignac number, because 381028233 - 2² = 381028229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381028233.

It is not an unprimeable number, because it can be changed into a prime (381028237) 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, 63504703 + ... + 63504708.

It is an arithmetic number, because the mean of its divisors is an integer number (127009412).

Almost surely, 2^381028233 is an apocalyptic number.

It is an amenable number.

381028233 is a deficient number, since it is larger than the sum of its proper divisors (127009415).

381028233 is a wasteful number, since it uses less digits than its factorization.

381028233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127009414.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 381028233 is about 19519.9444927489. The cubic root of 381028233 is about 724.9683588252.

The spelling of 381028233 in words is "three hundred eighty-one million, twenty-eight thousand, two hundred thirty-three".