387031 has 2 divisors, whose sum is σ = 387032. Its totient is φ = 387030.

The previous prime is 387017. The next prime is 387047. The reversal of 387031 is 130783.

It is a weak prime.

It is an emirp because it is prime and its reverse (130783) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387031 is a prime.

It is a super-2 number, since 2×387031² = 299585989922, which contains 22 as substring.

It is a Chen prime.

387031 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 386993 and 387011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193515 + 193516.

It is an arithmetic number, because the mean of its divisors is an integer number (193516).

2³⁸⁷⁰³¹ is an apocalyptic number.

387031 is a deficient number, since it is larger than the sum of its proper divisors (1).

387031 is an equidigital number, since it uses as much as digits as its factorization.

387031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 387031 is about 622.1181559800. The cubic root of 387031 is about 72.8755620664.

The spelling of 387031 in words is "three hundred eighty-seven thousand, thirty-one".