387285331 has 2 divisors, whose sum is σ = 387285332. Its totient is φ = 387285330.

The previous prime is 387285329. The next prime is 387285383. The reversal of 387285331 is 133582783.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 387285331 - 2¹ = 387285329 is a prime.

It is a super-2 number, since 2×387285331² = 299979855215559122, which contains 22 as substring.

Together with 387285329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (387280331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193642665 + 193642666.

It is an arithmetic number, because the mean of its divisors is an integer number (193642666).

Almost surely, 2^387285331 is an apocalyptic number.

387285331 is a deficient number, since it is larger than the sum of its proper divisors (1).

387285331 is an equidigital number, since it uses as much as digits as its factorization.

387285331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 387285331 is about 19679.5663316040. The cubic root of 387285331 is about 728.9152155991.

The spelling of 387285331 in words is "three hundred eighty-seven million, two hundred eighty-five thousand, three hundred thirty-one".