385422331 has 4 divisors (see below), whose sum is σ = 440482672. Its totient is φ = 330361992.

The previous prime is 385422319. The next prime is 385422341. The reversal of 385422331 is 133224583.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 385422331 - 2¹¹ = 385420283 is a prime.

It is a super-2 number, since 2×385422331² = 297100746466947122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 385422293 and 385422302.

It is not an unprimeable number, because it can be changed into a prime (385422311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27530160 + ... + 27530173.

It is an arithmetic number, because the mean of its divisors is an integer number (110120668).

Almost surely, 2^385422331 is an apocalyptic number.

385422331 is a deficient number, since it is larger than the sum of its proper divisors (55060341).

385422331 is an equidigital number, since it uses as much as digits as its factorization.

385422331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55060340.

The product of its digits is 17280, while the sum is 31.

The square root of 385422331 is about 19632.1759109886. The cubic root of 385422331 is about 727.7445435417.

The spelling of 385422331 in words is "three hundred eighty-five million, four hundred twenty-two thousand, three hundred thirty-one".