378331811 has 32 divisors (see below), whose sum is σ = 457906176. Its totient is φ = 308016000.

The previous prime is 378331801. The next prime is 378331813. The reversal of 378331811 is 118133873.

It is a cyclic number.

It is not a de Polignac number, because 378331811 - 2⁶ = 378331747 is a prime.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (378331813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1216346 + ... + 1216656.

It is an arithmetic number, because the mean of its divisors is an integer number (14309568).

Almost surely, 2^378331811 is an apocalyptic number.

378331811 is a deficient number, since it is larger than the sum of its proper divisors (79574365).

378331811 is a wasteful number, since it uses less digits than its factorization.

378331811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563.

The product of its digits is 12096, while the sum is 35.

The square root of 378331811 is about 19450.7534815492. The cubic root of 378331811 is about 723.2541813244.

The spelling of 378331811 in words is "three hundred seventy-eight million, three hundred thirty-one thousand, eight hundred eleven".