395373631 has 2 divisors, whose sum is σ = 395373632. Its totient is φ = 395373630.

The previous prime is 395373613. The next prime is 395373661. The reversal of 395373631 is 136373593.

Together with previous prime (395373613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (136373593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 395373631 - 2⁹ = 395373119 is a prime.

It is a super-2 number, since 2×395373631² = 312640616180248322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395373661) 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, 197686815 + 197686816.

It is an arithmetic number, because the mean of its divisors is an integer number (197686816).

Almost surely, 2^395373631 is an apocalyptic number.

395373631 is a deficient number, since it is larger than the sum of its proper divisors (1).

395373631 is an equidigital number, since it uses as much as digits as its factorization.

395373631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090, while the sum is 40.

The square root of 395373631 is about 19884.0044005225. The cubic root of 395373631 is about 733.9546625151.

The spelling of 395373631 in words is "three hundred ninety-five million, three hundred seventy-three thousand, six hundred thirty-one".