386431 has 2 divisors, whose sum is σ = 386432. Its totient is φ = 386430.

The previous prime is 386429. The next prime is 386437. The reversal of 386431 is 134683.

It is a weak prime.

It is an emirp because it is prime and its reverse (134683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 386431 - 2¹ = 386429 is a prime.

It is a super-2 number, since 2×386431² = 298657835522, which contains 22 as substring.

Together with 386429, it forms a pair of twin primes.

386431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 386396 and 386405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193215 + 193216.

It is an arithmetic number, because the mean of its divisors is an integer number (193216).

2³⁸⁶⁴³¹ is an apocalyptic number.

386431 is a deficient number, since it is larger than the sum of its proper divisors (1).

386431 is an equidigital number, since it uses as much as digits as its factorization.

386431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 386431 is about 621.6357454330. The cubic root of 386431 is about 72.8378838167.

The spelling of 386431 in words is "three hundred eighty-six thousand, four hundred thirty-one".