842538331 has 2 divisors, whose sum is σ = 842538332. Its totient is φ = 842538330.

The previous prime is 842538329. The next prime is 842538341. The reversal of 842538331 is 133835248.

842538331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 842538331 - 2¹ = 842538329 is a prime.

It is a super-2 number, since 2×842538331² = 1419741678408531122, which contains 22 as substring.

Together with 842538329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (842538311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421269165 + 421269166.

It is an arithmetic number, because the mean of its divisors is an integer number (421269166).

Almost surely, 2^842538331 is an apocalyptic number.

842538331 is a deficient number, since it is larger than the sum of its proper divisors (1).

842538331 is an equidigital number, since it uses as much as digits as its factorization.

842538331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 842538331 is about 29026.5108306183. The cubic root of 842538331 is about 944.4882426435.

The spelling of 842538331 in words is "eight hundred forty-two million, five hundred thirty-eight thousand, three hundred thirty-one".