378305131 has 8 divisors (see below), whose sum is σ = 411384960. Its totient is φ = 346428288.

The previous prime is 378305107. The next prime is 378305197. The reversal of 378305131 is 131503873.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 378305131 - 2⁷ = 378305003 is a prime.

It is a super-2 number, since 2×378305131² = 286229544281854322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378305093 and 378305102.

It is not an unprimeable number, because it can be changed into a prime (378305531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300091 + ... + 301348.

It is an arithmetic number, because the mean of its divisors is an integer number (51423120).

Almost surely, 2^378305131 is an apocalyptic number.

378305131 is a deficient number, since it is larger than the sum of its proper divisors (33079829).

378305131 is a wasteful number, since it uses less digits than its factorization.

378305131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601493.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 378305131 is about 19450.0676348438. The cubic root of 378305131 is about 723.2371796038.

The spelling of 378305131 in words is "three hundred seventy-eight million, three hundred five thousand, one hundred thirty-one".