381343433 has 6 divisors (see below), whose sum is σ = 402470874. Its totient is φ = 361272384.

The previous prime is 381343421. The next prime is 381343441. The reversal of 381343433 is 334343183.

It can be written as a sum of positive squares in only one way, i.e., 300918409 + 80425024 = 17347^2 + 8968^2 .

It is not a de Polignac number, because 381343433 - 2¹⁴ = 381327049 is a prime.

It is a Duffinian number.

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 381343433.

It is not an unprimeable number, because it can be changed into a prime (381343453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 527816 + ... + 528537.

It is an arithmetic number, because the mean of its divisors is an integer number (67078479).

Almost surely, 2^381343433 is an apocalyptic number.

It is an amenable number.

381343433 is a deficient number, since it is larger than the sum of its proper divisors (21127441).

381343433 is a wasteful number, since it uses less digits than its factorization.

381343433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056391 (or 1056372 counting only the distinct ones).

The product of its digits is 31104, while the sum is 32.

The square root of 381343433 is about 19528.0166171580. The cubic root of 381343433 is about 725.1682101970.

The spelling of 381343433 in words is "three hundred eighty-one million, three hundred forty-three thousand, four hundred thirty-three".