378631121 has 8 divisors (see below), whose sum is σ = 418281600. Its totient is φ = 339852240.

The previous prime is 378631109. The next prime is 378631139. The reversal of 378631121 is 121136873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 378631121 - 2¹⁰ = 378630097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378631171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216986 + ... + 218723.

It is an arithmetic number, because the mean of its divisors is an integer number (52285200).

Almost surely, 2^378631121 is an apocalyptic number.

It is an amenable number.

378631121 is a deficient number, since it is larger than the sum of its proper divisors (39650479).

378631121 is a wasteful number, since it uses less digits than its factorization.

378631121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435799.

The product of its digits is 6048, while the sum is 32.

The square root of 378631121 is about 19458.4460068115. The cubic root of 378631121 is about 723.4448606351. Note that the first 3 decimals are identical.

Adding to 378631121 its reverse (121136873), we get a palindrome (499767994).

The spelling of 378631121 in words is "three hundred seventy-eight million, six hundred thirty-one thousand, one hundred twenty-one".