381233433 has 16 divisors (see below), whose sum is σ = 581533056. Its totient is φ = 217620480.

The previous prime is 381233429. The next prime is 381233453. The reversal of 381233433 is 334332183.

It is a happy number.

It is not a de Polignac number, because 381233433 - 2² = 381233429 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 381233433.

It is not an unprimeable number, because it can be changed into a prime (381233453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12313 + ... + 30233.

It is an arithmetic number, because the mean of its divisors is an integer number (36345816).

Almost surely, 2^381233433 is an apocalyptic number.

It is an amenable number.

381233433 is a deficient number, since it is larger than the sum of its proper divisors (200299623).

381233433 is a wasteful number, since it uses less digits than its factorization.

381233433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18944.

The product of its digits is 15552, while the sum is 30.

The square root of 381233433 is about 19525.1999477598. The cubic root of 381233433 is about 725.0984776258.

The spelling of 381233433 in words is "three hundred eighty-one million, two hundred thirty-three thousand, four hundred thirty-three".