381212633 has 4 divisors (see below), whose sum is σ = 381252480. Its totient is φ = 381172788.

The previous prime is 381212617. The next prime is 381212651. The reversal of 381212633 is 336212183.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 381212633 - 2⁴ = 381212617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 381212596 and 381212605.

It is not an unprimeable number, because it can be changed into a prime (381212653) 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, 4016 + ... + 27902.

It is an arithmetic number, because the mean of its divisors is an integer number (95313120).

Almost surely, 2^381212633 is an apocalyptic number.

It is an amenable number.

381212633 is a deficient number, since it is larger than the sum of its proper divisors (39847).

381212633 is a wasteful number, since it uses less digits than its factorization.

381212633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39846.

The product of its digits is 5184, while the sum is 29.

The square root of 381212633 is about 19524.6672955008. The cubic root of 381212633 is about 725.0852903226.

The spelling of 381212633 in words is "three hundred eighty-one million, two hundred twelve thousand, six hundred thirty-three".