378428031 has 24 divisors (see below), whose sum is σ = 569871120. Its totient is φ = 250947072.

The previous prime is 378428027. The next prime is 378428051. The reversal of 378428031 is 130824873.

378428031 is a `hidden beast` number, since 378 + 4 + 280 + 3 + 1 = 666.

It is not a de Polignac number, because 378428031 - 2² = 378428027 is a prime.

It is a super-2 number, since 2×378428031² = 286415549293073922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378428051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42865 + ... + 50933.

It is an arithmetic number, because the mean of its divisors is an integer number (23744630).

Almost surely, 2^378428031 is an apocalyptic number.

378428031 is a deficient number, since it is larger than the sum of its proper divisors (191443089).

378428031 is an equidigital number, since it uses as much as digits as its factorization.

378428031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8277 (or 8265 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 378428031 is about 19453.2267503363. The cubic root of 378428031 is about 723.3154904860.

The spelling of 378428031 in words is "three hundred seventy-eight million, four hundred twenty-eight thousand, thirty-one".