386623631 has 2 divisors, whose sum is σ = 386623632. Its totient is φ = 386623630.

The previous prime is 386623597. The next prime is 386623649. The reversal of 386623631 is 136326683.

It is a strong prime.

It is an emirp because it is prime and its reverse (136326683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 386623631 - 2¹⁸ = 386361487 is a prime.

It is a super-2 number, since 2×386623631² = 298955664095248322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386623651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193311815 + 193311816.

It is an arithmetic number, because the mean of its divisors is an integer number (193311816).

Almost surely, 2^386623631 is an apocalyptic number.

386623631 is a deficient number, since it is larger than the sum of its proper divisors (1).

386623631 is an equidigital number, since it uses as much as digits as its factorization.

386623631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 38.

The square root of 386623631 is about 19662.7472902441. The cubic root of 386623631 is about 728.4998472964.

The spelling of 386623631 in words is "three hundred eighty-six million, six hundred twenty-three thousand, six hundred thirty-one".