378512331 has 16 divisors (see below), whose sum is σ = 523371264. Its totient is φ = 243130464.

The previous prime is 378512297. The next prime is 378512341. The reversal of 378512331 is 133215873.

It is not a de Polignac number, because 378512331 - 2⁷ = 378512203 is a prime.

It is a super-2 number, since 2×378512331² = 286543169438107122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 378512292 and 378512301.

It is not an unprimeable number, because it can be changed into a prime (378512341) 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 in 15 ways as a sum of consecutive naturals, for example, 5121 + ... + 27986.

It is an arithmetic number, because the mean of its divisors is an integer number (32710704).

Almost surely, 2^378512331 is an apocalyptic number.

378512331 is a deficient number, since it is larger than the sum of its proper divisors (144858933).

378512331 is a wasteful number, since it uses less digits than its factorization.

378512331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33250.

The product of its digits is 15120, while the sum is 33.

The square root of 378512331 is about 19455.3933653370. The cubic root of 378512331 is about 723.3691959586.

The spelling of 378512331 in words is "three hundred seventy-eight million, five hundred twelve thousand, three hundred thirty-one".