398031680371 has 32 divisors (see below), whose sum is σ = 463563051840. Its totient is φ = 338553229824.

The previous prime is 398031680357. The next prime is 398031680377. The reversal of 398031680371 is 173086130893.

It is a cyclic number.

It is not a de Polignac number, because 398031680371 - 2⁵ = 398031680339 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (398031680377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36669381 + ... + 36680233.

It is an arithmetic number, because the mean of its divisors is an integer number (14486345370).

Almost surely, 2^398031680371 is an apocalyptic number.

398031680371 is a deficient number, since it is larger than the sum of its proper divisors (65531371469).

398031680371 is a wasteful number, since it uses less digits than its factorization.

398031680371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14935.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 398031680371 in words is "three hundred ninety-eight billion, thirty-one million, six hundred eighty thousand, three hundred seventy-one".