378812231 has 16 divisors (see below), whose sum is σ = 452390400. Its totient is φ = 310139808.

The previous prime is 378812227. The next prime is 378812251. The reversal of 378812231 is 132218873.

It is a cyclic number.

It is not a de Polignac number, because 378812231 - 2² = 378812227 is a prime.

It is a super-2 number, since 2×378812231² = 286997412710394722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 378812191 and 378812200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378812251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162905 + ... + 165213.

It is an arithmetic number, because the mean of its divisors is an integer number (28274400).

Almost surely, 2^378812231 is an apocalyptic number.

378812231 is a deficient number, since it is larger than the sum of its proper divisors (73578169).

378812231 is a wasteful number, since it uses less digits than its factorization.

378812231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358.

The product of its digits is 16128, while the sum is 35.

The square root of 378812231 is about 19463.0992136402. The cubic root of 378812231 is about 723.5601903111.

The spelling of 378812231 in words is "three hundred seventy-eight million, eight hundred twelve thousand, two hundred thirty-one".