378044431 has 2 divisors, whose sum is σ = 378044432. Its totient is φ = 378044430.

The previous prime is 378044423. The next prime is 378044449. The reversal of 378044431 is 134440873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378044431 - 2³ = 378044423 is a prime.

It is a super-2 number, since 2×378044431² = 285835183620227522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378044531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189022215 + 189022216.

It is an arithmetic number, because the mean of its divisors is an integer number (189022216).

Almost surely, 2^378044431 is an apocalyptic number.

378044431 is a deficient number, since it is larger than the sum of its proper divisors (1).

378044431 is an equidigital number, since it uses as much as digits as its factorization.

378044431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 378044431 is about 19443.3647036720. The cubic root of 378044431 is about 723.0710075159.

The spelling of 378044431 in words is "three hundred seventy-eight million, forty-four thousand, four hundred thirty-one".