387339131 has 2 divisors, whose sum is σ = 387339132. Its totient is φ = 387339130.

The previous prime is 387339089. The next prime is 387339143. The reversal of 387339131 is 131933783.

It is a strong prime.

It is an emirp because it is prime and its reverse (131933783) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387339131 is a prime.

It is a super-2 number, since 2×387339131² = 300063204807670322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (387339191) 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 as a sum of consecutive naturals, namely, 193669565 + 193669566.

It is an arithmetic number, because the mean of its divisors is an integer number (193669566).

Almost surely, 2^387339131 is an apocalyptic number.

387339131 is a deficient number, since it is larger than the sum of its proper divisors (1).

387339131 is an equidigital number, since it uses as much as digits as its factorization.

387339131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The square root of 387339131 is about 19680.9331841760. The cubic root of 387339131 is about 728.9489666174.

The spelling of 387339131 in words is "three hundred eighty-seven million, three hundred thirty-nine thousand, one hundred thirty-one".