3998475830231 has 2 divisors, whose sum is σ = 3998475830232. Its totient is φ = 3998475830230.

The previous prime is 3998475830227. The next prime is 3998475830233. The reversal of 3998475830231 is 1320385748993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3998475830231 - 2² = 3998475830227 is a prime.

It is a super-2 number, since 2×3998475830231² (a number of 26 digits) contains 22 as substring.

Together with 3998475830233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3998475830233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999237915115 + 1999237915116.

It is an arithmetic number, because the mean of its divisors is an integer number (1999237915116).

Almost surely, 2^{3998475830231} is an apocalyptic number.

3998475830231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3998475830231 is an equidigital number, since it uses as much as digits as its factorization.

3998475830231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 3998475830231 in words is "three trillion, nine hundred ninety-eight billion, four hundred seventy-five million, eight hundred thirty thousand, two hundred thirty-one".