3990838436231 has 2 divisors, whose sum is σ = 3990838436232. Its totient is φ = 3990838436230.

The previous prime is 3990838436201. The next prime is 3990838436243. The reversal of 3990838436231 is 1326348380993.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3990838436231 - 2¹⁴ = 3990838419847 is a prime.

It is a super-2 number, since 2×3990838436231² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3990838436201) 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, 1995419218115 + 1995419218116.

It is an arithmetic number, because the mean of its divisors is an integer number (1995419218116).

Almost surely, 2^{3990838436231} is an apocalyptic number.

3990838436231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3990838436231 is an equidigital number, since it uses as much as digits as its factorization.

3990838436231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20155392, while the sum is 59.

The spelling of 3990838436231 in words is "three trillion, nine hundred ninety billion, eight hundred thirty-eight million, four hundred thirty-six thousand, two hundred thirty-one".